3678944 - Error 'SV019' is encountered during Account Groups - Partner Functions Assignment

• An error occurs when attempting to assign the partner function "SE - Sales Employee" to the customer account group "CUST - Customers" in the SSCUI Activity '101286' Set Up Partner Determination for Customer and Supplier Master.
• The error message displayed is: "Select key from the allowed namespace."

• Self-Service-Configurations-UI
• SAP S/4HANA Cloud Public Edition

SAP S/4HANA Cloud Public Edition, partner function, SE - Sales Employee, customer account group, CUST - Customers, select key from the allowed namespace, error message, account group assignment, troubleshooting, namespace error, partner function assignment, S4 HANA cloud , KBA , SV-BC-SSC-FRW , Self Service for Business Configuration Framework , SV-BC-SSC-REG , Self Service for Business Configuration Registry , Problem