How To Fix UGMD405 - DDIC structures already being generated by user &1

SAP Error Message - Details

• Message type: E = Error

• Message class: UGMD - FIN Master Data: Messages

• Message number: 405

• Message text: DDIC structures already being generated by user &1

What causes this issue?

The database tables and structures must be regenerated. User &V1& has
already started the generation. This activity can take several minutes.

System Response

Processing is terminated.

How to fix this error?

Wait a while and then start the function again.

Procedure for System Administrators

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

Error message extract from SAP system. Copyright SAP SE.