3543459 - SAML2 Metadata Download Error Due to HTTP Whitelist Exception in SAP S/4HANA

• When executing the SAML2 transaction to download metadata, an error occurs, preventing the completion of the transaction.
• The error message displayed is
  500 Internal Server Error WebDynpro Exception: URL for redirect does not exist in HTTP whitelist
• Below dump can be observed in ST22 at the same time:
  Category               ABAP programming error
  Runtime Errors         UNCAUGHT_EXCEPTION
  Except.                CX_WD_GENERAL
  ABAP Program           CX_WD_GENERAL=================CP
  Application Component  BC-WD-ABA
  ...
  |EXTERNAL_URL                                                                                      |
  |    /sap/saml2/sp/metadata?sap-client=xxx

SAML2

SAML2, Metadata, Download, Error, HTTP whitelist, Web Dynpro Exception, SAP S/4HANA, UCONCOCKPIT, SSO, Configuration, 500, URL for redirect does not exist in HTTP whitelist , KBA , BC-MID-ICF , Internet Communication Framework , BC-WD-ABA , Web Dynpro ABAP , BC-SEC-LGN-SML , SAML 2.0 for ABAP , Problem