How To Fix U9521 - Routing does not exist for successor activity

U9521 - Overview

• Message type: E = Error

• Message class: U9 - Message Class for Output in Application Log

• Message number: 521

• Message text: Routing does not exist for successor activity

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 U9521 - Routing does not exist for successor activity ?

  The SAP error message U9521, "Routing does not exist for successor activity," typically occurs in the context of production planning and control, particularly when dealing with production orders, routing, or work center activities. This error indicates that the system cannot find a valid routing for the specified successor activity in the production process.
  
  Cause:
  
  Missing Routing: The most common cause is that the routing for the successor activity has not been defined in the system.
  Incorrect Configuration: The routing may exist, but it is not correctly configured or linked to the relevant material or production order.
  Activity Sequence Issues: The sequence of activities in the routing may not be properly defined, leading to a situation where the system cannot find the next step.
  Material Master Issues: The material master data may not be correctly set up, which can affect the routing.
  Versioning Issues: If there are multiple versions of the routing, the system may be referencing