How To Fix PEP401 - Document type '&' not known

PEP401 - Overview

• Message type: E = Error

• Message class: PEP - Schedule Manager: Messages

• Message number: 401

• Message text: Document type '&' not known

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 PEP401 - Document type '&' not known ?

  The SAP error message PEP401, which states "Document type '&' not known," typically occurs in the context of SAP Project System (PS) or related modules when the system encounters a document type that is not recognized or defined in the system. This can happen during various operations, such as creating or processing documents related to projects, such as purchase orders, invoices, or other project-related documents.
  Causes:
  
  Undefined Document Type: The document type specified in the transaction is not defined in the system configuration.
  Incorrect Configuration: The document type may have been incorrectly configured or deleted in the system.
  Authorization Issues: The user may not have the necessary authorizations to access the specified document type.
  Custom Development: If there are custom developments or enhancements, they may reference a document type that is not properly set up.
  
  Solutions:
  
  
  Check Document Type Configuration:
  
  Go to the configuration settings in SAP (Transaction Code: SPRO).
  Navigate to the relevant area for document types (e.g.,