In the XD02 screen, if the customer has not been created for this sales area, you will see a message prompting you to "Extend" the customer master. Select the appropriate data for the new sales area.

: New systems were implemented to automatically log user activity and data changes, reducing manual oversight requirements. Regulatory Alignment

Therefore, "SAP V210" suggests we are working with a system at a specific version or patch level from 2021.