How To Fix EG426 - Serialization by ISU group material is not possible in MM

SAP Error Message - Details

• Message type: E = Error

• Message class: EG - IS-U device management

• Message number: 426

• Message text: Serialization by ISU group material is not possible in MM

What causes this issue?

Serialization by IS-U group material is only possible using IS-U
transactions.

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

System Response

Processing is stopped.

How to fix this error?

Terminate the process and, in IS-U Device Management, allocate a group
material to device category &V1&.

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 EG426 - Serialization by ISU group material is not possible in MM ?

  The SAP error message EG426, which states "Serialization by ISU group material is not possible in MM," typically occurs in the context of materials management (MM) and is related to the handling of serialized materials in the ISU (Industry Solution for Utilities) module. This error indicates that there is an issue with the serialization process for materials that are classified as ISU group materials.
  Cause:
  
  Material Type Configuration: The material in question may be configured as an ISU group material, which is not compatible with the serialization process in the MM module.
  Missing Serialization Data: The material may not have the necessary serialization data or settings configured in the system.
  Incorrect Movement Type: The movement type being used may not support serialization for the specific material type.
  Master Data Issues: There may be inconsistencies or missing information in the material master data related to serialization.
  
  Solution:
  
  Check Material Configuration: Verify the configuration of the material in the material master. Ensure that it is set up correctly for serialization and that it is not incorrectly classified as an ISU group material if it should be serialized.
  Review Movement Types: Ensure that the movement types being used for the transaction support serialization. You may need to adjust the movement type settings in the configuration.
  Update Serialization Data: If the material requires serialization, ensure that all necessary serialization data is entered and maintained in the system.
  Consult Documentation: Review SAP documentation or notes related to serialization and ISU group materials to ensure compliance with best practices.
  Check User Authorizations: Ensure that the user performing the transaction has the necessary authorizations to handle serialized materials.
  Contact SAP Support: If the issue persists, consider reaching out to SAP support for further assistance, especially if it appears to be a system bug or requires deeper investigation.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional guidance.
  Transaction Codes: Familiarize yourself with relevant transaction codes such as MM01 (Create Material), MM02 (Change Material), and MM03 (Display Material) to review material settings.
  ISU Documentation: Review the ISU documentation for specific guidelines on handling group materials and serialization.
  Training and Resources: Consider training sessions or resources on MM and ISU integration to better understand the serialization process and its implications.
  
  By following these steps, you should be able to identify the root cause of the EG426 error and implement the necessary solutions to resolve it.