[Mary Gao (MaryGao)]

Original Swagger linter

• linter code: MissingXmsErrorResponse
• linter doc: missing-xms-error-response.md

Migration report

migration.md

Historical full validation (74e56a0): 487/487 ARM projects passed native validation, matching all 20 historical Swagger findings with 0 Swagger-only and 6 explained native-only findings; final integrity verification passed and the full report is published (details).

Fixes #6014

[github-actions]

All changed packages have been documented.

• ✅ @azure-tools/typespec-azure-resource-manager
• ✅ @azure-tools/typespec-azure-rulesets

Show changes

@azure-tools/typespec-azure-rulesets - internal ✏️

Register require-error-decorator as disabled in the resource-manager recommended ruleset.

@azure-tools/typespec-azure-resource-manager - feature ✏️

Add require-error-decorator to require @error on 4xx and 5xx response models, except HEAD 404 responses.

[github-actions]

📦 Package size report

✅ No notable package size changes compared to the base branch.

14 package(s) with no notable change

Package	Packed (base → head)	Δ Packed	Unpacked (base → head)	Δ Unpacked
@azure-tools/typespec-azure-resource-manager	211.13 KB → 211.22 KB	+91 B (+0.0%)	1.26 MB → 1.26 MB	+638 B (+0.0%)
@azure-tools/typespec-azure-rulesets	6.21 KB → 6.23 KB	+24 B (+0.4%)	38.47 KB → 38.67 KB	+197 B (+0.5%)
@azure-tools/azure-http-specs	154.49 KB → 154.49 KB	—	1.27 MB → 1.27 MB	—
@azure-tools/typespec-autorest	88.64 KB → 88.64 KB	—	427.94 KB → 427.94 KB	—
@azure-tools/typespec-autorest-canonical	7.42 KB → 7.42 KB	—	26.00 KB → 26.00 KB	—
@azure-tools/typespec-azure-core	144.66 KB → 144.66 KB	—	771.39 KB → 771.39 KB	—
@azure-tools/typespec-azure-examples	96.99 KB → 96.99 KB	—	487.04 KB → 487.04 KB	—
@azure-tools/typespec-azure-portal-core	36.32 KB → 36.32 KB	—	243.05 KB → 243.05 KB	—
@azure-tools/typespec-client-generator-core	264.53 KB → 264.53 KB	—	1.40 MB → 1.40 MB	—
@azure-tools/typespec-go	303.20 KB → 303.20 KB	—	1.55 MB → 1.55 MB	—
@azure-tools/typespec-java	20.23 MB → 20.23 MB	—	22.53 MB → 22.53 MB	—
@azure-tools/typespec-metadata	15.88 KB → 15.88 KB	—	62.08 KB → 62.08 KB	—
@azure-tools/typespec-python	42.66 KB → 42.66 KB	—	166.15 KB → 166.15 KB	—
@azure-tools/typespec-ts	551.21 KB → 551.21 KB	—	2.76 MB → 2.76 MB	—

_{Packed = gzipped .tgz published to npm. Unpacked = total extracted size. 🆕 added, 🗑️ removed. Packages from the core/ submodule are not included.
🔴 grew · 🟢 shrank — only changes of at least 512 B and 0.5% are marked.}

[pkg-pr-new]

Open in StackBlitz

npm i https://pkg.pr.new/@azure-tools/typespec-azure-resource-manager@6028

npm i https://pkg.pr.new/@azure-tools/typespec-azure-rulesets@6028

commit: 1ace718

[azure-sdk-automation]

You can try these changes here

🛝 Playground	🌐 Website

[Mary Gao (MaryGao)]

Full ARM validation is complete for MissingXmsErrorResponse → missing-error-decorator, including final dataset integrity verification.

• 487/487 projects assessed successfully, with no compile/worker failures.
• 20 Swagger findings matched, 0 Swagger-only, 6 explained native-only.
• Extras: four non-service Search SDK customizations, one CSharp-only Deployment Stacks customization excluded by AutoRest scope, and one Solutions response under x-ms-paths outside the legacy selector.

Fresh native source-scope lint used the verified historical Swagger baseline at specs revision 2cd3c5dd6d00a5f53214fe594afd2aef3f44d3f9 and unchanged candidate 74e56a0f144190769180d5dbb27179db8b448c9c. Swagger was not regenerated; source suppressions were retained and the target rule was explicitly enabled. Source/version populations are not aligned, so observed correspondence is not a universal equivalence claim.

Full report and published evidence. All 487 native receipts and exact runtime artifacts are preserved; the uploaded runtime archive passed a download/hash round trip. CI/reviewer approval remains separate.