How To Fix MD370 - Vendor &1 is being used by material &2, therefore cannot be changed

SAP Error Message - Details

• Message type: E = Error

• Message class: MD - Material Requirements Planning (MRP)

• Message number: 370

• Message text: Vendor &1 is being used by material &2, therefore cannot be changed

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message MD370 - Vendor &1 is being used by material &2, therefore cannot be changed ?

  The SAP error message MD370 indicates that a vendor is currently assigned to a material, and as a result, you cannot make changes to the vendor information for that material. This error typically arises in the context of materials management and procurement processes within SAP.
  Cause:
  The error occurs when:
  
  You attempt to change the vendor for a material that is already linked to that vendor in the system.
  The material is being used in a purchasing document (like a purchase order or contract) or is part of a material master record that is locked for changes.
  There are existing transactions or dependencies that prevent the modification of the vendor assignment.
  
  Solution:
  To resolve the MD370 error, you can take the following steps:
  
  
  Check Existing Assignments:
  
  Use transaction codes like MM03 (Display Material) to check the material master data and see the current vendor assignments.
  Verify if the material is linked to any open purchase orders, contracts, or other procurement documents.
  
  
  
  Review Purchase Documents:
  
  Use transaction codes like ME23N (Display Purchase Order) to check if there are any active purchase orders referencing the material and vendor.
  If there are open documents, you may need to close or modify them before changing the vendor.
  
  
  
  Change Vendor Assignment:
  
  If the vendor needs to be changed, ensure that there are no active transactions that would prevent this change.
  If necessary, you can create a new vendor or use a different material number if the current one cannot be modified.
  
  
  
  Consult with Your Team:
  
  If you are unsure about the implications of changing the vendor, consult with your procurement or materials management team to understand the impact on existing processes.
  
  
  
  Use Transaction Codes:
  
  You can use transaction codes like ME1M (Vendor List) or ME2N (Purchase Orders by Vendor) to gather more information about the vendor and material relationships.
  
  
  
  Related Information:
  
  Material Master Data: Understand how material master data is structured in SAP and how vendor assignments are managed.
  Purchasing Documents: Familiarize yourself with the types of purchasing documents in SAP and their lifecycle.
  Authorization: Ensure you have the necessary authorizations to make changes to vendor assignments in the system.
  SAP Notes: Check for any relevant SAP Notes or documentation that may provide additional insights or updates related to this error.
  
  By following these steps, you should be able to identify the cause of the MD370 error and take appropriate action to resolve it.