How To Fix VHURM013 - Handling unit &1 is not a main HU

SAP Error Message - Details

• Message type: E = Error

• Message class: VHURM - Messages for "Packing in Production (REM)"

• Message number: 013

• Message text: Handling unit &1 is not a main HU

What causes this issue?

The handling unit you entered is not the main handling unit in a nested
structure of handling units. You can only backflush handling units at
the top of a structure of nested handling units.

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?

Enter a handling unit from the top of a structure of nested handling
units.

Error message extract from SAP system. Copyright SAP SE.