Added extra required step

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cc: @barclayn

Author: MarileeTurscak-MSFT

articles/active-directory/verifiable-credentials/verifiable-credentials-configure-tenant.md

@@ -138,7 +138,7 @@ To add the required permissions, follow these steps:
 
 1. Select **APIs my organization uses**.
 
-1. Search for the **Verifiable Credentials Service Request** service principal, and select it.
+1. Search for the **Verifiable Credentials Service Request** and **Verifiable Credentials Service** service principals, and select them.
 
     ![Screenshot that shows how to select the service principal.](media/verifiable-credentials-configure-tenant/add-app-api-permissions-select-service-principal.png)