How To Fix FOAP_CD_ASSIGNMENT028 - Document &2 has invoice reference &1

SAP Error Message - Details

• Message type: E = Error

• Message class: FOAP_CD_ASSIGNMENT - Assignment of Open Credits and Payments

• Message number: 028

• Message text: Document &2 has invoice reference &1

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 FOAP_CD_ASSIGNMENT028 - Document &2 has invoice reference &1 ?

  The SAP error message FOAP_CD_ASSIGNMENT028 indicates that there is an issue with the assignment of a document in the context of invoice references. Specifically, the message states that the document (identified by &2) has an invoice reference (identified by &1), which may not be allowed in the current context or transaction.
  Cause:
  
  Duplicate Invoice Reference: The document you are trying to process may already be linked to an invoice reference, which is causing a conflict.
  Incorrect Document Type: The document type you are using may not support invoice references, or the system may not allow the assignment of an invoice reference in the current transaction.
  Configuration Issues: There may be configuration settings in the SAP system that restrict the assignment of invoice references under certain conditions.
  Data Entry Errors: There could be a mistake in the data entry, such as entering the wrong document number or invoice reference.
  
  Solution:
  
  Check Document Status: Verify the status of the document identified by &2. Ensure that it is not already processed or linked to another invoice reference.
  Review Invoice Reference: Check the invoice reference identified by &1 to ensure it is valid and correctly entered.
  Correct Document Type: Ensure that you are using the correct document type that allows for invoice references. If necessary, consult with your SAP administrator or functional consultant.
  Configuration Review: If the issue persists, review the configuration settings related to document assignments and invoice references. This may require assistance from an SAP consultant.
  Data Validation: Double-check all data entries for accuracy, ensuring that the document and invoice reference numbers are correct.
  
  Related Information:
  
  Transaction Codes: Depending on the context, you may be using transaction codes such as FB60 (Enter Incoming Invoice), FB70 (Enter Outgoing Invoice), or others related to financial document processing.
  SAP Notes: Check for any relevant SAP Notes that may address this specific error message or provide additional guidance.
  User Authorization: Ensure that you have the necessary authorizations to perform the actions related to the document and invoice references.
  Consult Documentation: Refer to SAP documentation or help files for more detailed information on handling invoice references and document assignments.
  
  If the problem continues after trying the above solutions, it may be beneficial to reach out to your SAP support team for further assistance.