SAP Build Work Zone Standard Edition – HTTP 500 and Unsubscription Failed in BTP Trial US10 with IAS

Hello SAP Community, I am experiencing what appears to be a provisioning issue with SAP Build Work Zone, standard edition in an SAP BTP Trial account (US10 region) . Environment SAP BTP Trial Region: US10 SAP Build Work Zone, standard edition Service plan: standard Cloud Foundry runtime SAP Cloud Identity Services / Identity Authentication (IAS) Authentication: OpenID Connect (OIDC) Identity / Trust Configuration SAP Cloud Identity Services is successfully subscribed and the subaccount has an active OIDC trust configuration for business users. BTP Cockpit confirms that the recommended OpenID C