diff --git a/CMakeLists.txt b/CMakeLists.txt
index aa251cc..e87b919 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -38,6 +38,7 @@ add_library(fesa_core STATIC
     src/fesa/fem/line2_shape.cpp
     src/fesa/io/abaqus/parser.cpp
     src/fesa/io/abaqus/semantic_mapper.cpp
+    src/fesa/io/abaqus/set_resolver.cpp
     src/fesa/io/hdf5/writer.cpp
     src/fesa/model/domain.cpp
     src/fesa/model/domain_builder.cpp
diff --git a/include/fesa/io/abaqus/deck_record.hpp b/include/fesa/io/abaqus/deck_record.hpp
index d685f3d..fa2bcb9 100644
--- a/include/fesa/io/abaqus/deck_record.hpp
+++ b/include/fesa/io/abaqus/deck_record.hpp
@@ -15,6 +15,7 @@ struct DeckRecord final {
     std::map<std::string, std::string, std::less<>> parameters;
     std::vector<std::vector<std::string>> data;
     SourceLocation source;
+    std::vector<SourceLocation> data_sources;
 };
 
 struct ParsedPart final {
diff --git a/include/fesa/io/abaqus/set_resolver.hpp b/include/fesa/io/abaqus/set_resolver.hpp
new file mode 100644
index 0000000..c399312
--- /dev/null
+++ b/include/fesa/io/abaqus/set_resolver.hpp
@@ -0,0 +1,31 @@
+#pragma once
+
+#include <cstdint>
+#include <string>
+#include <vector>
+
+#include <fesa/core/diagnostic.hpp>
+#include <fesa/io/abaqus/deck_record.hpp>
+
+namespace fesa {
+
+enum class ResolvedSetScope { global, part, assembly };
+
+enum class ResolvedSetKind { node, element };
+
+struct ResolvedSet final {
+    std::string scope_name;
+    std::string set_name;
+    std::vector<std::int64_t> sorted_unique_labels;
+    ResolvedSetScope scope = ResolvedSetScope::global;
+    ResolvedSetKind kind = ResolvedSetKind::node;
+};
+
+struct SetResolutionResult final {
+    std::vector<ResolvedSet> sets;
+    std::vector<Diagnostic> diagnostics;
+};
+
+[[nodiscard]] SetResolutionResult resolve_sets(const ParsedDeck& deck);
+
+}  // namespace fesa
diff --git a/src/fesa/io/abaqus/parser.cpp b/src/fesa/io/abaqus/parser.cpp
index 55b2c53..e182e30 100644
--- a/src/fesa/io/abaqus/parser.cpp
+++ b/src/fesa/io/abaqus/parser.cpp
@@ -216,6 +216,11 @@ ParseDeckResult parse_deck(const std::filesystem::path& path) {
                 current_instance->transform_data.push_back(fields);
             } else if (current_record != nullptr) {
                 current_record->data.push_back(fields);
+                current_record->data_sources.push_back(SourceLocation{
+                    path,
+                    line_number,
+                    first_nonspace + 1U,
+                });
             } else {
                 return syntax_failure(
                     "abaqus.syntax.data_without_keyword",
diff --git a/src/fesa/io/abaqus/set_resolver.cpp b/src/fesa/io/abaqus/set_resolver.cpp
new file mode 100644
index 0000000..f2d5ba0
--- /dev/null
+++ b/src/fesa/io/abaqus/set_resolver.cpp
@@ -0,0 +1,411 @@
+#include <fesa/io/abaqus/set_resolver.hpp>
+
+#include <algorithm>
+#include <charconv>
+#include <compare>
+#include <cstddef>
+#include <cstdint>
+#include <map>
+#include <set>
+#include <string>
+#include <string_view>
+#include <utility>
+#include <vector>
+
+namespace fesa {
+namespace {
+
+struct SetNamespace final {
+    ResolvedSetScope scope;
+    std::string scope_name;
+    ResolvedSetKind kind;
+
+    auto operator<=>(const SetNamespace&) const = default;
+};
+
+struct SetKey final {
+    SetNamespace name_space;
+    std::string set_name;
+
+    auto operator<=>(const SetKey&) const = default;
+};
+
+struct RawMember final {
+    std::string text;
+    SourceLocation source;
+};
+
+struct RawSet final {
+    std::vector<RawMember> members;
+};
+
+enum class VisitState { unvisited, visiting, resolved, failed };
+
+const std::string* parameter(
+    const DeckRecord& record,
+    const std::string_view name) {
+    const auto found = record.parameters.find(name);
+    return found == record.parameters.end() ? nullptr : &found->second;
+}
+
+bool has_parameter(
+    const DeckRecord& record,
+    const std::string_view name) {
+    return record.parameters.contains(name);
+}
+
+SourceLocation data_source(
+    const DeckRecord& record,
+    const std::size_t row) {
+    return row < record.data_sources.size()
+               ? record.data_sources[row]
+               : record.source;
+}
+
+bool parse_positive_label(
+    const std::string_view text,
+    std::int64_t& value) {
+    const auto parsed =
+        std::from_chars(text.data(), text.data() + text.size(), value);
+    return parsed.ec == std::errc{} &&
+           parsed.ptr == text.data() + text.size() && value > 0;
+}
+
+class SetResolver final {
+public:
+    explicit SetResolver(const ParsedDeck& deck) : deck_{deck} {}
+
+    [[nodiscard]] SetResolutionResult resolve() {
+        collect_scope(
+            deck_.global_records,
+            {ResolvedSetScope::global, "global", ResolvedSetKind::node});
+
+        for (const ParsedPart& part : deck_.parts) {
+            collect_scope(
+                part.records,
+                {ResolvedSetScope::part,
+                 part.name,
+                 ResolvedSetKind::node});
+        }
+
+        collect_assembly();
+
+        std::vector<ResolvedSet> sets;
+        sets.reserve(raw_sets_.size());
+        for (const auto& [key, raw_set] : raw_sets_) {
+            static_cast<void>(raw_set);
+            if (!resolve_set(key)) {
+                continue;
+            }
+            sets.push_back({
+                key.name_space.scope_name,
+                key.set_name,
+                resolved_sets_.at(key),
+                key.name_space.scope,
+                key.name_space.kind,
+            });
+        }
+
+        if (!diagnostics_.empty()) {
+            sets.clear();
+        }
+        return {std::move(sets), std::move(diagnostics_)};
+    }
+
+private:
+    void add_error(
+        std::string code,
+        std::string message,
+        const SourceLocation& source) {
+        diagnostics_.push_back({
+            DiagnosticStage::semantic,
+            Severity::error,
+            std::move(code),
+            std::move(message),
+            source,
+        });
+    }
+
+    void collect_scope(
+        const std::vector<DeckRecord>& records,
+        SetNamespace name_space) {
+        collect_entities(records, name_space);
+        collect_set_records(records, std::move(name_space), nullptr);
+    }
+
+    void collect_entities(
+        const std::vector<DeckRecord>& records,
+        const SetNamespace& base_namespace) {
+        for (const DeckRecord& record : records) {
+            ResolvedSetKind kind;
+            if (record.keyword == "NODE") {
+                kind = ResolvedSetKind::node;
+            } else if (record.keyword == "ELEMENT") {
+                kind = ResolvedSetKind::element;
+            } else {
+                continue;
+            }
+
+            SetNamespace entity_namespace = base_namespace;
+            entity_namespace.kind = kind;
+            std::set<std::int64_t>& labels = entities_[entity_namespace];
+            for (std::size_t row = 0; row < record.data.size(); ++row) {
+                if (record.data[row].empty()) {
+                    continue;
+                }
+                std::int64_t label = 0;
+                if (!parse_positive_label(record.data[row][0], label)) {
+                    continue;
+                }
+                labels.insert(label);
+
+                if (kind != ResolvedSetKind::element) {
+                    continue;
+                }
+                const std::string* set_name = parameter(record, "ELSET");
+                if (set_name == nullptr || set_name->empty()) {
+                    continue;
+                }
+                raw_sets_[{entity_namespace, *set_name}].members.push_back({
+                    std::to_string(label),
+                    data_source(record, row),
+                });
+            }
+        }
+    }
+
+    void collect_set_records(
+        const std::vector<DeckRecord>& records,
+        const SetNamespace& base_namespace,
+        const std::string* active_instance) {
+        for (const DeckRecord& record : records) {
+            SetNamespace set_namespace = base_namespace;
+            std::string_view name_parameter;
+            if (record.keyword == "NSET") {
+                set_namespace.kind = ResolvedSetKind::node;
+                name_parameter = "NSET";
+            } else if (record.keyword == "ELSET") {
+                set_namespace.kind = ResolvedSetKind::element;
+                name_parameter = "ELSET";
+            } else {
+                continue;
+            }
+
+            const std::string* set_name = parameter(record, name_parameter);
+            if (set_name == nullptr || set_name->empty()) {
+                add_error(
+                    "abaqus.semantic.missing_parameter",
+                    "*" + record.keyword + " requires parameter " +
+                        std::string{name_parameter} + ".",
+                    record.source);
+                continue;
+            }
+
+            if (set_namespace.scope == ResolvedSetScope::assembly) {
+                const std::string* instance = parameter(record, "INSTANCE");
+                if (active_instance == nullptr || instance == nullptr ||
+                    *instance != *active_instance) {
+                    add_error(
+                        "abaqus.semantic.wrong_instance",
+                        "Assembly set '" + *set_name +
+                            "' must reference the active Instance.",
+                        record.source);
+                    continue;
+                }
+            }
+
+            RawSet& raw_set = raw_sets_[{set_namespace, *set_name}];
+            if (has_parameter(record, "GENERATE")) {
+                collect_generate(record, raw_set);
+            } else {
+                collect_explicit(record, raw_set);
+            }
+        }
+    }
+
+    void collect_explicit(
+        const DeckRecord& record,
+        RawSet& raw_set) {
+        for (std::size_t row = 0; row < record.data.size(); ++row) {
+            for (const std::string& field : record.data[row]) {
+                if (field.empty()) {
+                    continue;
+                }
+                raw_set.members.push_back({field, data_source(record, row)});
+            }
+        }
+    }
+
+    void collect_generate(
+        const DeckRecord& record,
+        RawSet& raw_set) {
+        const SourceLocation source =
+            record.data.empty() ? record.source : data_source(record, 0U);
+        if (record.data.size() != 1U || record.data[0].size() != 3U ||
+            std::ranges::any_of(
+                record.data[0],
+                [](const std::string& field) { return field.empty(); })) {
+            add_error(
+                "abaqus.semantic.invalid_generate",
+                "*" + record.keyword +
+                    ", GENERATE requires exactly start, end, increment.",
+                source);
+            return;
+        }
+
+        std::int64_t start = 0;
+        std::int64_t end = 0;
+        std::int64_t increment = 0;
+        if (!parse_positive_label(record.data[0][0], start) ||
+            !parse_positive_label(record.data[0][1], end) ||
+            !parse_positive_label(record.data[0][2], increment) ||
+            start > end || (end - start) % increment != 0) {
+            add_error(
+                "abaqus.semantic.invalid_generate",
+                "Invalid *" + record.keyword + " generate range.",
+                source);
+            return;
+        }
+
+        for (std::int64_t label = start;; label += increment) {
+            raw_set.members.push_back({std::to_string(label), source});
+            if (label == end) {
+                break;
+            }
+        }
+    }
+
+    void collect_assembly() {
+        if (!deck_.assembly.has_value()) {
+            return;
+        }
+
+        const ParsedAssembly& assembly = *deck_.assembly;
+        const ParsedInstance* active_instance =
+            assembly.instances.size() == 1U
+                ? &assembly.instances.front()
+                : nullptr;
+        SetNamespace assembly_namespace{
+            ResolvedSetScope::assembly,
+            assembly.name,
+            ResolvedSetKind::node,
+        };
+
+        if (active_instance != nullptr) {
+            const auto part = std::ranges::find(
+                deck_.parts, active_instance->part_name, &ParsedPart::name);
+            if (part != deck_.parts.end()) {
+                for (const ResolvedSetKind kind : {
+                         ResolvedSetKind::node,
+                         ResolvedSetKind::element}) {
+                    const SetNamespace part_namespace{
+                        ResolvedSetScope::part,
+                        part->name,
+                        kind,
+                    };
+                    SetNamespace lifted_namespace = assembly_namespace;
+                    lifted_namespace.kind = kind;
+                    const auto labels = entities_.find(part_namespace);
+                    if (labels != entities_.end()) {
+                        entities_[lifted_namespace] = labels->second;
+                    }
+                }
+            }
+        }
+
+        const std::string* instance_name =
+            active_instance == nullptr ? nullptr : &active_instance->name;
+        collect_set_records(
+            assembly.records, assembly_namespace, instance_name);
+    }
+
+    bool resolve_set(const SetKey& key) {
+        VisitState& state = states_[key];
+        if (state == VisitState::resolved) {
+            return true;
+        }
+        if (state == VisitState::failed) {
+            return false;
+        }
+
+        state = VisitState::visiting;
+        bool succeeded = true;
+        std::vector<std::int64_t> labels;
+        for (const RawMember& member : raw_sets_.at(key).members) {
+            std::int64_t label = 0;
+            if (parse_positive_label(member.text, label)) {
+                const auto entity_namespace = entities_.find(key.name_space);
+                if (entity_namespace == entities_.end() ||
+                    !entity_namespace->second.contains(label)) {
+                    add_error(
+                        "abaqus.semantic.missing_set_member",
+                        "Set '" + key.set_name +
+                            "' references missing entity label " +
+                            std::to_string(label) + ".",
+                        member.source);
+                    succeeded = false;
+                    continue;
+                }
+                labels.push_back(label);
+                continue;
+            }
+
+            const SetKey nested_key{key.name_space, member.text};
+            const auto nested = raw_sets_.find(nested_key);
+            if (nested == raw_sets_.end()) {
+                add_error(
+                    "abaqus.semantic.missing_set_member",
+                    "Set '" + key.set_name + "' references missing set '" +
+                        member.text + "'.",
+                    member.source);
+                succeeded = false;
+                continue;
+            }
+
+            if (states_[nested_key] == VisitState::visiting) {
+                add_error(
+                    "abaqus.semantic.set_cycle",
+                    "Set '" + key.set_name +
+                        "' closes a nested set reference cycle through '" +
+                        member.text + "'.",
+                    member.source);
+                succeeded = false;
+                continue;
+            }
+            if (!resolve_set(nested_key)) {
+                succeeded = false;
+                continue;
+            }
+            const std::vector<std::int64_t>& nested_labels =
+                resolved_sets_.at(nested_key);
+            labels.insert(
+                labels.end(), nested_labels.begin(), nested_labels.end());
+        }
+
+        if (!succeeded) {
+            state = VisitState::failed;
+            return false;
+        }
+
+        std::ranges::sort(labels);
+        labels.erase(std::ranges::unique(labels).begin(), labels.end());
+        resolved_sets_[key] = std::move(labels);
+        state = VisitState::resolved;
+        return true;
+    }
+
+    const ParsedDeck& deck_;
+    std::map<SetNamespace, std::set<std::int64_t>> entities_;
+    std::map<SetKey, RawSet> raw_sets_;
+    std::map<SetKey, VisitState> states_;
+    std::map<SetKey, std::vector<std::int64_t>> resolved_sets_;
+    std::vector<Diagnostic> diagnostics_;
+};
+
+}  // namespace
+
+SetResolutionResult resolve_sets(const ParsedDeck& deck) {
+    return SetResolver{deck}.resolve();
+}
+
+}  // namespace fesa
diff --git a/tests/CMakeLists.txt b/tests/CMakeLists.txt
index f52859e..c51a102 100644
--- a/tests/CMakeLists.txt
+++ b/tests/CMakeLists.txt
@@ -120,6 +120,7 @@ add_test(
 add_executable(fesa_abaqus_parser_tests
     unit/io/abaqus/input_contract_test.cpp
     unit/io/abaqus/parser_test.cpp
+    unit/io/abaqus/set_resolution_test.cpp
 )
 
 target_compile_features(fesa_abaqus_parser_tests PRIVATE cxx_std_20)
@@ -156,6 +157,24 @@ add_test(
 # Steps 1-4 make this normative matrix pass, then remove WILL_FAIL.
 set_tests_properties(AbaqusInputContract PROPERTIES WILL_FAIL TRUE)
 
+add_test(
+    NAME SetResolution
+    COMMAND "$<TARGET_FILE:fesa_abaqus_parser_tests>"
+        --gtest_filter=SetResolution.*
+)
+
+add_test(
+    NAME PartSet
+    COMMAND "$<TARGET_FILE:fesa_abaqus_parser_tests>"
+        --gtest_filter=PartSet.*
+)
+
+add_test(
+    NAME AssemblySet
+    COMMAND "$<TARGET_FILE:fesa_abaqus_parser_tests>"
+        --gtest_filter=AssemblySet.*
+)
+
 add_executable(fesa_deck_to_domain_tests
     integration/io/minimal_deck_to_domain_test.cpp
 )
diff --git a/tests/unit/io/abaqus/set_resolution_test.cpp b/tests/unit/io/abaqus/set_resolution_test.cpp
new file mode 100644
index 0000000..9102e96
--- /dev/null
+++ b/tests/unit/io/abaqus/set_resolution_test.cpp
@@ -0,0 +1,328 @@
+#include <fesa/io/abaqus/parser.hpp>
+#include <fesa/io/abaqus/set_resolver.hpp>
+
+#include <algorithm>
+#include <filesystem>
+#include <fstream>
+#include <stdexcept>
+#include <string>
+#include <string_view>
+#include <system_error>
+#include <tuple>
+#include <vector>
+
+#include <gtest/gtest.h>
+
+namespace {
+
+class TemporaryDeck final {
+public:
+    TemporaryDeck(std::string_view name, std::string_view contents)
+        : path_{std::filesystem::path{testing::TempDir()} / name} {
+        std::ofstream output{path_, std::ios::binary};
+        output.write(
+            contents.data(), static_cast<std::streamsize>(contents.size()));
+        if (!output) {
+            throw std::runtime_error{"Failed to write temporary Abaqus deck."};
+        }
+    }
+
+    ~TemporaryDeck() {
+        std::error_code error;
+        std::filesystem::remove(path_, error);
+    }
+
+    TemporaryDeck(const TemporaryDeck&) = delete;
+    TemporaryDeck& operator=(const TemporaryDeck&) = delete;
+
+    [[nodiscard]] const std::filesystem::path& path() const noexcept {
+        return path_;
+    }
+
+private:
+    std::filesystem::path path_;
+};
+
+fesa::SetResolutionResult parse_and_resolve(
+    const TemporaryDeck& input) {
+    const fesa::ParseDeckResult parsed = fesa::parse_deck(input.path());
+    if (!parsed.deck.has_value()) {
+        throw std::runtime_error{"Test deck did not parse."};
+    }
+    return fesa::resolve_sets(*parsed.deck);
+}
+
+const fesa::ResolvedSet& find_set(
+    const fesa::SetResolutionResult& result,
+    const fesa::ResolvedSetScope scope,
+    const std::string_view scope_name,
+    const fesa::ResolvedSetKind kind,
+    const std::string_view set_name) {
+    const auto found = std::ranges::find_if(
+        result.sets,
+        [=](const fesa::ResolvedSet& set) {
+            return set.scope == scope && set.scope_name == scope_name &&
+                   set.kind == kind && set.set_name == set_name;
+        });
+    if (found == result.sets.end()) {
+        throw std::runtime_error{"Expected resolved set was not found."};
+    }
+    return *found;
+}
+
+const fesa::Diagnostic& find_diagnostic(
+    const fesa::SetResolutionResult& result,
+    const std::string_view code,
+    const std::size_t line) {
+    const auto found = std::ranges::find_if(
+        result.diagnostics,
+        [=](const fesa::Diagnostic& diagnostic) {
+            return diagnostic.code == code && diagnostic.source.has_value() &&
+                   diagnostic.source->line == line;
+        });
+    if (found == result.diagnostics.end()) {
+        throw std::runtime_error{"Expected set diagnostic was not found."};
+    }
+    return *found;
+}
+
+TEST(
+    SetResolution,
+    CanonicalizesExplicitGenerateNestedForwardDuplicateAndEmptySets) {
+    const TemporaryDeck input{
+        "fesa-set-resolution-valid.inp",
+        "*PART, NAME=BeamPart\n"
+        "*NODE\n"
+        "1, 0, 0, 0\n"
+        "2, 1, 0, 0\n"
+        "3, 2, 0, 0\n"
+        "*ELEMENT, TYPE=B31, ELSET=ImplicitElements\n"
+        "10, 1, 2\n"
+        "20, 2, 3\n"
+        "*NSET, NSET=AllNodes\n"
+        "GeneratedNodes, 3, 1, 3\n"
+        "*NSET, NSET=GeneratedNodes, GENERATE\n"
+        "1, 3, 1\n"
+        "*NSET, NSET=EmptyNodes\n"
+        "*ELSET, ELSET=AllElements\n"
+        "GeneratedElements, ImplicitElements, 20\n"
+        "*ELSET, ELSET=GeneratedElements, GENERATE\n"
+        "10, 20, 10\n"
+        "*END PART\n"};
+
+    const fesa::SetResolutionResult result = parse_and_resolve(input);
+
+    ASSERT_TRUE(result.diagnostics.empty());
+    EXPECT_EQ(
+        find_set(
+            result,
+            fesa::ResolvedSetScope::part,
+            "BeamPart",
+            fesa::ResolvedSetKind::node,
+            "AllNodes")
+            .sorted_unique_labels,
+        (std::vector<std::int64_t>{1, 2, 3}));
+    EXPECT_TRUE(
+        find_set(
+            result,
+            fesa::ResolvedSetScope::part,
+            "BeamPart",
+            fesa::ResolvedSetKind::node,
+            "EmptyNodes")
+            .sorted_unique_labels.empty());
+    EXPECT_EQ(
+        find_set(
+            result,
+            fesa::ResolvedSetScope::part,
+            "BeamPart",
+            fesa::ResolvedSetKind::element,
+            "AllElements")
+            .sorted_unique_labels,
+        (std::vector<std::int64_t>{10, 20}));
+}
+
+TEST(PartSet, KeepsNodeAndElementSetNamespacesSeparate) {
+    const TemporaryDeck input{
+        "fesa-part-set-kind-collision.inp",
+        "*PART, NAME=BeamPart\n"
+        "*NODE\n"
+        "1, 0, 0, 0\n"
+        "2, 1, 0, 0\n"
+        "*ELEMENT, TYPE=B31\n"
+        "1, 1, 2\n"
+        "*NSET, NSET=Shared\n"
+        "1\n"
+        "*ELSET, ELSET=Shared\n"
+        "1\n"
+        "*END PART\n"};
+
+    const fesa::SetResolutionResult result = parse_and_resolve(input);
+
+    ASSERT_TRUE(result.diagnostics.empty());
+    EXPECT_EQ(
+        find_set(
+            result,
+            fesa::ResolvedSetScope::part,
+            "BeamPart",
+            fesa::ResolvedSetKind::node,
+            "Shared")
+            .sorted_unique_labels,
+        (std::vector<std::int64_t>{1}));
+    EXPECT_EQ(
+        find_set(
+            result,
+            fesa::ResolvedSetScope::part,
+            "BeamPart",
+            fesa::ResolvedSetKind::element,
+            "Shared")
+            .sorted_unique_labels,
+        (std::vector<std::int64_t>{1}));
+}
+
+TEST(AssemblySet, KeepsPartScopeSeparateAndLiftsActivePartLabels) {
+    const TemporaryDeck input{
+        "fesa-assembly-set-scope-collision.inp",
+        "*PART, NAME=BeamPart\n"
+        "*NODE\n"
+        "1, 0, 0, 0\n"
+        "2, 1, 0, 0\n"
+        "*NSET, NSET=Shared\n"
+        "1\n"
+        "*END PART\n"
+        "*ASSEMBLY, NAME=RootAssembly\n"
+        "*INSTANCE, NAME=Beam-1, PART=BeamPart\n"
+        "*END INSTANCE\n"
+        "*NSET, NSET=Shared, INSTANCE=Beam-1\n"
+        "2, 2\n"
+        "*END ASSEMBLY\n"};
+
+    const fesa::SetResolutionResult result = parse_and_resolve(input);
+
+    ASSERT_TRUE(result.diagnostics.empty());
+    ASSERT_EQ(result.sets.size(), 2U);
+    EXPECT_EQ(
+        find_set(
+            result,
+            fesa::ResolvedSetScope::part,
+            "BeamPart",
+            fesa::ResolvedSetKind::node,
+            "Shared")
+            .sorted_unique_labels,
+        (std::vector<std::int64_t>{1}));
+    EXPECT_EQ(
+        find_set(
+            result,
+            fesa::ResolvedSetScope::assembly,
+            "RootAssembly",
+            fesa::ResolvedSetKind::node,
+            "Shared")
+            .sorted_unique_labels,
+        (std::vector<std::int64_t>{2}));
+    EXPECT_TRUE(std::ranges::is_sorted(
+        result.sets,
+        [](const fesa::ResolvedSet& left, const fesa::ResolvedSet& right) {
+            return std::tuple{
+                       left.scope,
+                       left.scope_name,
+                       left.kind,
+                       left.set_name} <
+                   std::tuple{
+                       right.scope,
+                       right.scope_name,
+                       right.kind,
+                       right.set_name};
+        }));
+}
+
+TEST(SetResolution, ReportsCycleAtTheClosingReferenceSource) {
+    const TemporaryDeck input{
+        "fesa-set-resolution-cycle.inp",
+        "*NSET, NSET=First\n"
+        "Second\n"
+        "*NSET, NSET=Second\n"
+        "First\n"};
+
+    const fesa::SetResolutionResult result = parse_and_resolve(input);
+
+    EXPECT_TRUE(result.sets.empty());
+    const fesa::Diagnostic& diagnostic =
+        find_diagnostic(result, "abaqus.semantic.set_cycle", 4U);
+    EXPECT_EQ(diagnostic.stage, fesa::DiagnosticStage::semantic);
+    EXPECT_EQ(diagnostic.source->file, input.path());
+}
+
+TEST(SetResolution, ReportsUnknownSetAndEntityAtTheirMemberRows) {
+    const TemporaryDeck input{
+        "fesa-set-resolution-missing.inp",
+        "*NODE\n"
+        "1, 0, 0, 0\n"
+        "*NSET, NSET=MissingEntity\n"
+        "2\n"
+        "*NSET, NSET=MissingSet\n"
+        "Unknown\n"};
+
+    const fesa::SetResolutionResult result = parse_and_resolve(input);
+
+    EXPECT_TRUE(result.sets.empty());
+    EXPECT_EQ(result.diagnostics.size(), 2U);
+    EXPECT_EQ(
+        find_diagnostic(
+            result, "abaqus.semantic.missing_set_member", 4U)
+            .stage,
+        fesa::DiagnosticStage::semantic);
+    EXPECT_EQ(
+        find_diagnostic(
+            result, "abaqus.semantic.missing_set_member", 6U)
+            .stage,
+        fesa::DiagnosticStage::semantic);
+}
+
+TEST(SetResolution, ReportsInvalidGenerateRangesInInputOrder) {
+    const TemporaryDeck input{
+        "fesa-set-resolution-generate-invalid.inp",
+        "*NSET, NSET=Reversed, GENERATE\n"
+        "3, 1, 1\n"
+        "*NSET, NSET=NotDivisible, GENERATE\n"
+        "1, 4, 2\n"
+        "*ELSET, ELSET=WrongFieldCount, GENERATE\n"
+        "1, 2\n"};
+
+    const fesa::SetResolutionResult result = parse_and_resolve(input);
+
+    EXPECT_TRUE(result.sets.empty());
+    ASSERT_EQ(result.diagnostics.size(), 3U);
+    for (std::size_t index = 0; index < result.diagnostics.size(); ++index) {
+        EXPECT_EQ(
+            result.diagnostics[index].code,
+            "abaqus.semantic.invalid_generate");
+        ASSERT_TRUE(result.diagnostics[index].source.has_value());
+    }
+    EXPECT_EQ(result.diagnostics[0].source->line, 2U);
+    EXPECT_EQ(result.diagnostics[1].source->line, 4U);
+    EXPECT_EQ(result.diagnostics[2].source->line, 6U);
+}
+
+TEST(AssemblySet, RejectsAnInstanceOtherThanTheSingleActiveInstance) {
+    const TemporaryDeck input{
+        "fesa-assembly-set-wrong-instance.inp",
+        "*PART, NAME=BeamPart\n"
+        "*NODE\n"
+        "1, 0, 0, 0\n"
+        "*END PART\n"
+        "*ASSEMBLY, NAME=RootAssembly\n"
+        "*INSTANCE, NAME=Beam-1, PART=BeamPart\n"
+        "*END INSTANCE\n"
+        "*NSET, NSET=Fixed, INSTANCE=Other\n"
+        "1\n"
+        "*END ASSEMBLY\n"};
+
+    const fesa::SetResolutionResult result = parse_and_resolve(input);
+
+    EXPECT_TRUE(result.sets.empty());
+    EXPECT_EQ(
+        find_diagnostic(result, "abaqus.semantic.wrong_instance", 8U)
+            .stage,
+        fesa::DiagnosticStage::semantic);
+}
+
+}  // namespace