How To Fix FP026 - Item specified for invoice reference is not an invoice item

FP026 - Overview

• Message type: E = Error

• Message class: FP - Invoice Parking

• Message number: 026

• Message text: Item specified for invoice reference is not an invoice item

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.

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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.

FP026 - Details

• The SAP error message FP026 ("Item specified for invoice reference is not an invoice item") typically occurs in the context of financial transactions, particularly when dealing with invoices and billing documents in the SAP system. This error indicates that the system is unable to find a valid invoice item corresponding to the item specified in the transaction you are trying to process.
  Causes of FP026 Error
  
  Incorrect Item Reference: The item number or reference you are trying to use does not correspond to a valid invoice item in the system.
  Invoice Not Posted: The invoice you are referencing may not have been posted yet, or it may have been deleted or reversed.
  Document Type Mismatch: The document type of the item you are referencing may not be compatible with the type of transaction you are trying to perform.
  Data Entry Errors: There may be typographical errors in the item number or other related fields.
  
  Configuration Issues: