Resolving Incorrect redirect_uri error post upgrade to RHBK from RH-SSO

Issue

• Unable to log into business central URL after upgrading RHSSO from 7.6 to RHBK 26.2.5

• Receiving 'Incorrect redirect_uri' error message in the client application during authentication with RHBK.

 {"error":"invalid_grant","error_description":"Incorrect redirect_uri"}

• Post upgrading to RHBK from RH-SSO following is observed during user authentication

Parameter 'redirect_uri' did not match originally saved redirect URI used in initial OIDC request. Saved redirectUri: https://app-url/context, redirectUri parameter: https://app-url/context?iss=https%3A%2F%2Frhbk-url%2Fauth%2Frealms%2Fxxxxx