How To Fix M8164 - You must enter a reference for document type &

SAP Error Message - Details

• Message type: E = Error

• Message class: M8 - Invoice Verification/Valuation

• Message number: 164

• Message text: You must enter a reference for document type &

What causes this issue?

You have not entered a <LS>Reference</>. The Customizing system is set
so that a reference must be entered for document type &V1&.

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

System Response

How to fix this error?

Check the document type. If it is correct, you must enter a
<LS>Reference</>.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message M8164 - You must enter a reference for document type & ?

  The SAP error message M8164 ("You must enter a reference for document type &") typically occurs in the context of inventory management or material document processing. This error indicates that a reference document (such as a purchase order, production order, or another relevant document) is required for the specific document type you are trying to create or process, but it has not been provided.
  Cause:
  
  Missing Reference Document: The document type you are working with requires a reference (e.g., a purchase order number) to be entered, but it has not been provided.
  Configuration Settings: The configuration for the document type may be set to require a reference, and the system is enforcing this rule.
  User Input Error: The user may have overlooked entering the required reference field.
  
  Solution:
  
  Enter the Required Reference: Check the document type you are working with and ensure that you enter the appropriate reference document number in the designated field.
  Review Document Type Configuration: If you have access to configuration settings, review the settings for the document type in question to determine if the reference is indeed required. This can be done in the IMG (Implementation Guide) under:
  
  Logistics Execution > Inventory Management > Document Types > Define Document Types.
  
  
  Consult Documentation: Refer to SAP documentation or help resources for the specific transaction you are using to understand the requirements for the document type.
  User Training: Ensure that users are trained on the importance of entering reference documents when required.
  
  Related Information:
  
  Transaction Codes: The error may occur in various transaction codes related to inventory management, such as MIGO (Goods Movement), MB1A (Goods Withdrawal), or MB1B (Transfer Posting).
  SAP Notes: Check SAP Notes for any known issues or updates related to this error message.
  User Exits or BAdIs: If the requirement for a reference document is not standard, there may be custom enhancements (user exits or BAdIs) that enforce this rule. Review any custom code that may affect document processing.
  
  If the issue persists after following these steps, it may be beneficial to consult with your SAP support team or a functional consultant who specializes in inventory management for further assistance.