Data on partner &1 currently being edited by user &2

What causes this issue?

Data for business partner &V1&, which is assigned to the selected
insurance object, is currently being edited by user &V2&.

System Response

You cannot change the data.

How to fix this error?

Change the insurance object data for business partner &V1&, once
user &V2& is done editing the data.

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.