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docs: add NG01902 orphan field error reference#68398

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surajy93:docs/add-ng01902-error
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docs: add NG01902 orphan field error reference#68398
surajy93 wants to merge 1 commit intoangular:mainfrom
surajy93:docs/add-ng01902-error

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@surajy93
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@surajy93 surajy93 commented Apr 27, 2026

Add the NG01902 (Orphan field in signal forms) documentation page to the Error Encyclopedia to help users troubleshoot when a form field becomes disconnected from its underlying model shape.

Fixes #68025

PR Checklist

Please check if your PR fulfills the following requirements:

PR Type

What kind of change does this PR introduce?

  • Bugfix
  • Feature
  • Code style update (formatting, local variables)
  • Refactoring (no functional changes, no api changes)
  • Build related changes
  • CI related changes
  • Documentation content changes
  • angular.dev application / infrastructure changes
  • Other... Please describe:

What is the current behavior?

Issue Number: N/A

What is the new behavior?

Does this PR introduce a breaking change?

  • Yes
  • No

Other information

@pullapprove pullapprove Bot requested a review from atscott April 27, 2026 16:08
@angular-robot angular-robot Bot added the area: docs Related to the documentation label Apr 27, 2026
@ngbot ngbot Bot added this to the Backlog milestone Apr 27, 2026
@atscott atscott requested review from leonsenft and removed request for atscott April 27, 2026 16:09
@SkyZeroZx
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Could you please add a - to 1902 , this format is used to generate links to the documentation, as each error has its own dedicated page.

ORPHAN_FIELD_PROPERTY = 1902,

Add the NG01902 (Orphan field in signal forms) documentation page
to the Error Encyclopedia and change the ORPHAN_FIELD_PROPERTY
error code to -1902 so Angular's RuntimeError automatically appends
a link to angular.dev/errors/NG01902 in the thrown error message.
@surajy93 surajy93 force-pushed the docs/add-ng01902-error branch from 31a438d to e17420f Compare April 27, 2026 16:25
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Error of signal forms missing in error encyclopedia

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