Unable to select the BU in "Assign Business Unit Business Function".

Summary:

Unable to select the BU in "Assign Business Unit Business Function".

Content (please ensure you mask any confidential information):

We have created a setup user with the username IMPL_USER_A.
Using this user, we attempted to configure Assign Business Unit Business Function, but we were unable to select the desired business unit SRA BU from the Scope, and could not navigate to the corresponding screen.

The previously created user during implementation, IMPL_USER_A, displays the BU name we want to modify in the Scope, and we are able to proceed with the configuration by clicking the BU name link.