Planning file entries for MRP areas are not converted

What causes this issue?

Planning file entries for MRP areas have not yet been converted.
MRP areas at client level cannot be carried out until the planning file
entries for MRP areas have been converted.

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

System Response

How to fix this error?

Start the conversion of the planning file entries for MRP areas. This
function is in Customizing, under Material Requirements Planning /
<DS:TRAN.OM0F>Planning file entries</>.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.