How To Fix MG520 - Distribution chain segment for material & has no header segment

SAP Error Message - Details

• Message type: E = Error

• Message class: MG - Batch input: material master

• Message number: 520

• Message text: Distribution chain segment for material & has no header segment

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message MG520 - Distribution chain segment for material & has no header segment ?

  The SAP error message MG520 indicates that there is an issue with the distribution chain segment for a material, specifically that it lacks a corresponding header segment. This error typically arises in the context of material master data, particularly when dealing with sales and distribution (SD) or materials management (MM) modules.
  Cause:
  
  Missing Header Segment: The primary cause of this error is that the material master record is missing a header segment for the specified distribution chain. The header segment is essential as it contains general data about the material that is relevant across all views.
  Incomplete Data Entry: During the creation or modification of the material master, if the header data was not properly saved or was skipped, it can lead to this error.
  Data Inconsistency: There may be inconsistencies in the database where the distribution chain segment exists without a corresponding header segment.
  
  Solution:
  
  
  Check Material Master Data:
  
  Go to transaction code MM03 (Display Material) and enter the material number.
  Check if the header data is present for the material. If not, you may need to create or update the material master.
  
  
  
  Create or Update Material Master:
  
  Use transaction code MM01 (Create Material) or MM02 (Change Material) to create or update the material master.
  Ensure that you fill in all required fields in the header segment and the distribution chain segment.
  
  
  
  Verify Distribution Chain:
  
  Ensure that the distribution chain you are trying to use is correctly set up in the system. You can check this in the configuration settings for sales and distribution.
  
  
  
  Check for Data Consistency:
  
  Use transaction code MM02 to check for any inconsistencies in the material master data.
  If inconsistencies are found, you may need to correct them manually or use a data correction tool.
  
  
  
  Consult with SAP Support:
  
  If the issue persists after checking the above points, it may be beneficial to consult with your SAP support team or refer to SAP Notes for any known issues related to this error.
  
  
  
  Related Information:
  
  Transaction Codes: 
  
  MM01 - Create Material
  MM02 - Change Material
  MM03 - Display Material
  MM04 - Display Changes
  
  
  SAP Notes: Check SAP Notes for any specific patches or updates related to this error message.
  Documentation: Review SAP documentation on material master data management for best practices and guidelines.
  
  By following these steps, you should be able to resolve the MG520 error and ensure that your material master data is correctly configured.