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