& is not a request in this system

What causes this issue?

The object cannot be edited as it is locked by project &V1&.
Project &V1& does not belong to this system.
Only projects of the form &V2&K* can be edited in this system.

System Response

The function is cancelled.

How to fix this error?

Repeat the function. If the error occurs again, send a detailed error
message to the SAP hotline.

Error message extract from SAP system. Copyright SAP SE.