How To Fix HM004 - Entry with mixed loading groups &1 and &2 for regulat. &3 already exists

SAP Error Message - Details

• Message type: E = Error

• Message class: HM - Messages

• Message number: 004

• Message text: Entry with mixed loading groups &1 and &2 for regulat. &3 already exists

What causes this issue?

You attempted to create a segregation rule for the enterprise-specific
mixed loading groups &V1& and &V2& for dangerous goods regulation &V3&.
This segregation rule already exists. The sequence of the two mixed
loading groups is irrelevant.

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?

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message HM004 - Entry with mixed loading groups &1 and &2 for regulat. &3 already exists ?

  The SAP error message HM004 indicates that there is an issue with mixed loading groups in the context of handling materials or products in the system. Specifically, it suggests that there is an attempt to create or process an entry that involves two different loading groups, which is not allowed in the current configuration.
  
  Cause:
  The error occurs when:
  
  You are trying to create a handling unit (HU) or a delivery that includes items from two different loading groups (e.g., loading group &1 and loading group &2).
  The system has already created an entry for a handling unit or delivery that includes items from one of these loading groups, leading to a conflict.
  
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check Loading Groups: Review the loading groups assigned to the materials or products involved. Ensure that they are consistent and that you are not mixing items from different loading groups in the same