Conversion of non-cumulative InfoCube with old data flow is not allowed

What causes this issue?

Historical data can only be loaded using the DTP.

System Response

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

How to fix this error?

Switch the object to the new data flow (DTP).

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.