Financial object with the specified trans. diff. '&' does not yet exist

What causes this issue?

You tried to transfer period values for the profitability analysis part
with the transaction differentiation '&V1&'. There is no profitability
analysis part for the financial object with transaction differentiation
'&V1&' for the specified key for the the original object.

System Response

The system is unable to save the data.

How to fix this error?

Enter a transaction differentiation for which a profitability analysis
part has already been created.

Error message extract from SAP system. Copyright SAP SE.