How To Fix AP326 - Old/new inv. prog.: different program type

SAP Error Message - Details

• Message type: E = Error

• Message class: AP - Investment program messages

• Message number: 326

• Message text: Old/new inv. prog.: different program type

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 AP326 - Old/new inv. prog.: different program type ?

  The SAP error message AP326 ("Old/new inv. prog.: different program type") typically occurs in the context of invoice processing, particularly when there is a mismatch between the program types of the old and new invoice programs. This can happen during the invoice verification process or when trying to change an invoice that has already been posted.
  Cause:
  The error is generally caused by one of the following reasons:
  
  Different Program Types: The old invoice and the new invoice are associated with different program types. For example, one might be a standard invoice while the other is a credit memo or a different type of document.
  Configuration Issues: There may be configuration settings in the SAP system that are not aligned, leading to discrepancies in how invoices are processed.
  Data Inconsistencies: There could be inconsistencies in the data related to the invoice programs, such as differences in the document types or the way they are set up in the system.
  
  Solution:
  To resolve the AP326 error, you can take the following steps:
  
  
  Check Invoice Types: Verify the types of the old and new invoices. Ensure that they are compatible and that you are not trying to change an invoice type that is fundamentally different from the original.
  
  
  Review Configuration: Check the configuration settings in the SAP system for invoice processing. Ensure that the program types are correctly defined and that there are no discrepancies in the settings.
  
  
  Use Correct Transaction: If you are trying to change an invoice, make sure you are using the correct transaction code that corresponds to the type of invoice you are working with.
  
  
  Consult Documentation: Refer to SAP documentation or help resources for specific guidance on handling invoice types and program types.
  
  
  Contact Support: If the issue persists, consider reaching out to your SAP support team or consulting with an SAP expert who can provide more tailored assistance based on your specific system configuration.
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as MIRO (Invoice Verification) or FB60 (Enter Incoming Invoice) that are commonly used in invoice processing.
  SAP Notes: Check for any SAP Notes related to this error message, as they may provide additional insights or patches that can resolve the issue.
  User Roles and Authorizations: Ensure that the user has the necessary roles and authorizations to perform the actions related to invoice processing.
  
  By following these steps, you should be able to identify the cause of the AP326 error and implement a solution to resolve it.