How To Fix DGHU146 - Material assignment of material &1 to specification &2 already exists

SAP Error Message - Details

• Message type: E = Error

• Message class: DGHU - Messages for Handling Unit and Dynam. Classification

• Message number: 146

• Message text: Material assignment of material &1 to specification &2 already exists

What causes this issue?

The replacement material &V1& already has a valid assignment for
dangerous goods classification &V2&.

System Response

It is not necessary to make a new assignment when generating master data
for dynamic classification.

How to fix this error?

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

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 DGHU146 - Material assignment of material &1 to specification &2 already exists ?

  The SAP error message DGHU146 indicates that there is an attempt to assign a material to a specification that has already been assigned. This typically occurs in the context of SAP's Product Lifecycle Management (PLM) or Material Management (MM) modules, where materials are linked to specifications for various purposes, such as compliance, quality management, or product data management.
  Cause:
  
  Duplicate Assignment: The primary cause of this error is that the material you are trying to assign to the specification is already linked to that specification in the system.
  Data Entry Error: There may have been an oversight or mistake in data entry, leading to an attempt to reassign the same material to the same specification.
  System Configuration: In some cases, system settings or configurations may prevent multiple assignments of the same material to a specification.
  
  Solution:
  
  Check Existing Assignments: Before attempting to assign the material again, check the existing assignments for the material and specification. You can do this by navigating to the relevant transaction or using the appropriate report to view the current assignments.
  Remove Duplicate Assignment: If you find that the material is already assigned and you need to change it, you may need to remove the existing assignment before creating a new one.
  Use Different Specification: If the intention is to assign the material to a different specification, ensure that you are selecting the correct specification that does not already have the material assigned.
  Consult Documentation: Review SAP documentation or help files related to material specifications to ensure you are following the correct procedures for assignments.
  Contact Support: If you are unable to resolve the issue, consider reaching out to your SAP support team or consulting with an SAP expert for further assistance.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as C202 (Change Material Specification) or C201 (Create Material Specification) to manage material specifications effectively.
  Authorization: Ensure that you have the necessary authorizations to make changes to material specifications in the SAP system.
  SAP Notes: Check for any SAP Notes related to this error message, as they may provide additional insights or patches that could resolve the issue.
  Training: Consider training sessions or workshops on SAP PLM or MM modules to better understand how material specifications work and how to manage them effectively.
  
  By following these steps, you should be able to address the DGHU146 error and manage material assignments in SAP more effectively.