Re-direct to account group change functionality (-> long text)

What causes this issue?

Re-direction to account group change functionality. A new instance of
transaction BP is opened in a role grouping containing all
customer-relevant roles currently assigned to the business partner.
Please note: the response time of the system might be slow when pressing
F4 on account group field. The reason for this is the high number and
complexity of validations to be performed to determine the potential
target account groups.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.