InfoSource & does not exist in source system &

What causes this issue?

The process to create a transfer structure for the InfoSource &V1& was
terminated.
InfoSource &V1& is not known in source system &V2&.
The reason for this is that the InfoSource has been deleted from the
source system, but the metadata has not yet been adjusted. This means
that the metadata for source system &V2& is therefore obsolete in the
Business Information Warehouse.

System Response

The action was terminated; data changes were reversed.

How to fix this error?

Adjust the metadata for source system &V2& in the Business Information
Warehouse.

Error message extract from SAP system. Copyright SAP SE.