How To Fix CRM_EXT_REF405 - Additional external reference number cannot be blank

SAP Error Message - Details

• Message type: E = Error

• Message class: CRM_EXT_REF - Messages for Add. External References Set

• Message number: 405

• Message text: Additional external reference number cannot be blank

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CRM_EXT_REF405 - Additional external reference number cannot be blank ?

  The SAP error message CRM_EXT_REF405 indicates that an additional external reference number cannot be left blank when processing certain transactions in the SAP Customer Relationship Management (CRM) system. This error typically arises in scenarios where an external reference number is required for integration with other systems or for tracking purposes.
  Cause:
  The error occurs when:
  
  A transaction or document is being created or updated in SAP CRM, and the system expects an additional external reference number to be provided.
  The field for the external reference number is either not filled in or is being passed as blank from the source system.
  
  Solution:
  To resolve the CRM_EXT_REF405 error, you can take the following steps:
  
  
  Check Required Fields: Ensure that the additional external reference number field is filled in the transaction or document you are trying to process. This field may be mandatory based on the configuration of your SAP system.
  
  
  Review Integration Settings: If the data is being transferred from another system (like an ERP system), check the integration settings to ensure that the external reference number is being correctly mapped and passed to SAP CRM.
  
  
  Update Configuration: If the external reference number is not required for your business process, you may need to adjust the configuration in SAP CRM to make this field optional. This typically requires access to the customizing settings in the SAP system.
  
  
  Consult Documentation: Review the relevant SAP documentation or help files for your specific version of SAP CRM to understand the context in which the external reference number is required.
  
  
  Contact Support: If you are unable to resolve the issue, consider reaching out to your SAP support team or consulting with an SAP expert who can provide guidance based on your specific system configuration and business processes.
  
  
  Related Information:
  
  Transaction Codes: Depending on the context, you may be using transaction codes like CRMD_ORDER, CRMD_ORDERADM_H, or others related to CRM order management.
  Field Configuration: The external reference number field can often be found in the document header or item details, depending on the type of transaction.
  SAP Notes: Check for any relevant SAP Notes that may address this error or provide additional context or fixes.
  
  By ensuring that the additional external reference number is populated correctly, you should be able to resolve the error and proceed with your transaction in SAP CRM.