How To Fix KD126 - First rule already reached

SAP Error Message - Details

• Message type: E = Error

• Message class: KD - CO Settlement

• Message number: 126

• Message text: First rule already reached

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 KD126 - First rule already reached ?

  The SAP error message KD126 ("First rule already reached") typically occurs in the context of the SAP Controlling (CO) module, particularly when dealing with the allocation of costs in the context of activity-based costing or internal orders. This error indicates that the system has already reached the first rule in the allocation process, and it cannot proceed further.
  Cause:
  The error can be caused by several factors, including:
  
  Allocation Rules Configuration: The allocation rules may be incorrectly configured, leading to the system attempting to apply a rule that has already been executed.
  Cycle Definition: If the cycle definition for the cost allocation is not set up correctly, it may lead to the system trying to allocate costs in a way that violates the defined rules.
  Data Issues: There may be issues with the data being processed, such as missing or incorrect master data for cost centers, internal orders, or activity types.
  Execution Order: The order of execution of the allocation cycles may not be appropriate, causing the system to reach a rule prematurely.
  
  Solution:
  To resolve the KD126 error, you can take the following steps:
  
  Check Allocation Rules: Review the allocation rules defined in the system. Ensure that they are set up correctly and that there are no overlaps or conflicts between rules.
  Review Cycle Configuration: Go to the cycle configuration in the SAP system and verify that the cycles are defined correctly. Ensure that the sequence of rules is logical and that there are no circular references.
  Data Validation: Check the master data related to cost centers, internal orders, and activity types. Ensure that all necessary data is complete and accurate.
  Execution Sequence: If you are running multiple allocation cycles, ensure that they are executed in the correct order. Sometimes, running cycles out of order can lead to this error.
  Test in a Development Environment: If possible, replicate the issue in a development or test environment to identify the specific cause without affecting production data.
  Consult Documentation: Refer to SAP documentation or help resources for specific guidance on the allocation process and error handling.
  
  Related Information:
  
  Transaction Codes: You may need to use transaction codes like KSV5 (for planning) or KSV1 (for creating cycles) to manage allocation cycles.
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide patches or updates that could resolve the issue.
  Support: If the issue persists, consider reaching out to SAP support or your internal SAP team for further assistance.
  
  By following these steps, you should be able to identify and resolve the cause of the KD126 error in your SAP system.