Error Code Portal
MicrosoftMicrosoft Entra IDError code

AADSTS50124

Invalid regular expression configured for claims transformation for this application

Alternative forms: 50124

What does this code mean?

Code AADSTS50124 · An issue reported by Microsoft Entra ID.

Official explanation · Original text

Invalid regular expression configured for claims transformation for this application. Contact your tenant admin to fix the claims mapping configuration. See Customize SAML token claims

Troubleshooting and diagnostic links

First check that the document's product, version, and environment match your situation.

Source and terms of use

Microsoft Entra authentication and authorization error codes ↗

Creator: Microsoft Corporation and contributors
License: Creative Commons Attribution 4.0 International
Checked on: 2026-11-12

Modifications: Extracted official AADSTS table; Markdown stripped; short English error name selected; original Korean product context added. Official general diagnostic guide is distinguished from code-specific troubleshooting. Documentation license explicitly granted by README Legal Notices; repository LICENSE currently contains MIT terms, also retained as evidence.

Source details · Original licenses and notices