How To Fix /SCMTMS/TM_VALIDATE521 - &1: Predecessor stage &2 ends after start of successor stage &3

SAP Error Message - Details

• Message type: E = Error

• Message class: /SCMTMS/TM_VALIDATE -

• Message number: 521

• Message text: &1: Predecessor stage &2 ends after start of successor stage &3

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 /SCMTMS/TM_VALIDATE521 - &1: Predecessor stage &2 ends after start of successor stage &3 ?

  The SAP error message /SCMTMS/TM_VALIDATE521 indicates a validation issue in the Transportation Management (TM) module. Specifically, it points out that there is a problem with the scheduling of stages in a transportation process. The error message states that the predecessor stage (stage &2) ends after the start of the successor stage (stage &3), which creates a logical inconsistency in the planning of transportation activities.
  Cause:
  The root cause of this error is typically related to the scheduling of transportation stages. It occurs when:
  
  The end time of a predecessor stage overlaps or is later than the start time of a successor stage.
  There may be incorrect time settings or dependencies defined in the transportation planning process.
  The stages may have been incorrectly sequenced or configured in the transportation order.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check Stage Timing: Review the timing of the predecessor and successor stages in the transportation order. Ensure that the end time of the predecessor stage is before the start time of the successor stage.
  
  
  Adjust Scheduling: If the timing is incorrect, adjust the scheduling of the stages. This may involve changing the planned start or end times of the stages to ensure they are logically sequenced.
  
  
  Review Dependencies: Check if there are any dependencies or constraints that might be affecting the scheduling of the stages. Ensure that all dependencies are correctly defined.
  
  
  Re-evaluate Planning: If the stages are part of a larger planning process, re-evaluate the entire transportation plan to ensure that all stages are correctly sequenced and that there are no other conflicts.
  
  
  Consult Documentation: Refer to SAP documentation or help resources for additional guidance on configuring transportation stages and resolving scheduling conflicts.
  
  
  Testing: After making adjustments, test the transportation order again to ensure that the error is resolved and that the stages are now correctly sequenced.
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may provide additional insights or fixes related to this error message.
  Transaction Codes: Familiarize yourself with transaction codes related to Transportation Management, such as /SCMTMS/ORDER for managing transportation orders.
  User Forums: Consider visiting SAP community forums or user groups where similar issues may have been discussed, and solutions shared.
  
  By following these steps, you should be able to identify and correct the scheduling issue that is causing the error message /SCMTMS/TM_VALIDATE521.