How To Fix CRM_EXT_REF404 - Additional external reference type cannot be blank

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 404

• Message text: Additional external reference type cannot be blank

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message CRM_EXT_REF404 - Additional external reference type cannot be blank ?

  The SAP error message "CRM_EXT_REF404: Additional external reference type cannot be blank" typically occurs in the context of SAP Customer Relationship Management (CRM) when there is an attempt to create or update a business object (like a lead, opportunity, or activity) that requires an external reference type, but this reference type is not provided.
  
  Cause:
  
  Missing External Reference Type: The error indicates that the system expects an external reference type to be specified, but it is either missing or not properly set in the relevant fields.
  
  Configuration Issues: There may be configuration settings in the CRM system that require certain fields to be filled out, and if these are not configured correctly, it can lead to this error.
  Data Entry Errors: Users may inadvertently leave the external reference type field blank when entering data.
  
  
  Solution:
  
  Check Input Fields: Ensure that the external reference type field is filled out correctly when creating or updating the business object.