How To Fix C$620 - Cust./material combination already exists for this value assign. instance

SAP Error Message - Details

• Message type: E = Error

• Message class: C$ -

• Message number: 620

• Message text: Cust./material combination already exists for this value assign. instance

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message C$620 - Cust./material combination already exists for this value assign. instance ?

  The SAP error message C$620, which states "Cust./material combination already exists for this value assignment instance," typically occurs in the context of SAP's handling of customer-specific material assignments, particularly in the areas of sales and distribution (SD) or materials management (MM). This error indicates that there is an attempt to create or modify a customer-material combination that already exists in the system for a specific value assignment instance.
  Cause:
  
  
  Duplicate Entry: The most common cause of this error is that the customer-material combination you are trying to create or modify already exists in the system. This could happen if:
  
  You are trying to create a new entry for a customer and material that has already been defined.
  There is an attempt to assign a value to a combination that is already assigned.
  
  
  
  Incorrect Data Entry: Sometimes, the error can arise from incorrect data entry, where the system interprets the input as a duplicate due to slight variations in the data.
  
  
  Configuration Issues: There may be configuration settings in the system that enforce unique combinations of customer and material, leading to this error when trying to create a duplicate.
  
  
  Solution:
  
  
  Check Existing Combinations: 
  
  Use transaction codes like VD03 (Display Customer Material Info) or MM03 (Display Material) to check if the customer-material combination already exists.
  If it does exist, you may need to modify the existing entry instead of creating a new one.
  
  
  
  Review Input Data: 
  
  Ensure that the data you are entering is correct and does not inadvertently create a duplicate. Check for typos or variations in the customer or material numbers.
  
  
  
  Delete or Modify Existing Entry: 
  
  If the existing combination is no longer needed, you can delete it using the appropriate transaction code (e.g., VD02 for changing customer material info).
  If you need to update the existing entry, use the relevant transaction to make the necessary changes.
  
  
  
  Consult Configuration: 
  
  If you believe the error is due to configuration settings, consult with your SAP administrator or functional consultant to review the settings related to customer-material assignments.
  
  
  
  Error Logs: 
  
  Check the system logs or error messages for additional details that might provide more context about the error.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as VD01 (Create Customer Material Info), VD02, VD03, MM01, MM02, and MM03.
  SAP Notes: Search for SAP Notes related to this error message in the SAP Support Portal, as there may be specific patches or updates that address known issues.
  Documentation: Review SAP documentation or help files related to customer-material info records for more detailed guidance on managing these entries.
  
  By following these steps, you should be able to resolve the C$620 error and manage customer-material combinations effectively in your SAP system.