No changes made (saving unnecessary)

What causes this issue?

You want to save the entry although you have not made any changes.

System Response

The system will not save the data, as this is unnecessary.

How to fix this error?

Save your entries only if you have changed the data.

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.