How To Fix RP901 - Combination entries not possible

SAP Error Message - Details

• Message type: E = Error

• Message class: RP - Error Messages for Infotype Module Pools

• Message number: 901

• Message text: Combination entries not possible

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message RP901 - Combination entries not possible ?

  The SAP error message RP901, which states "Combination entries not possible," typically occurs in the context of payroll processing. This error indicates that there is an issue with the combination of wage types or other payroll-related entries that are not compatible with each other based on the configuration in the system.
  Causes of RP901 Error
  
  
  Incompatible Wage Types: The error often arises when there are wage types that cannot be combined due to configuration settings. For example, certain wage types may be mutually exclusive or may not be allowed to be processed together.
  
  
  Incorrect Payroll Configuration: The payroll schema or rules may not be set up correctly, leading to conflicts in how wage types are processed.
  
  
  Missing or Incorrect Master Data: Employee master data or infotypes may be incomplete or incorrectly configured, leading to issues during payroll processing.
  
  
  Custom Enhancements: If there are custom enhancements or modifications in the payroll process, they may inadvertently cause conflicts with standard processing rules.
  
  
  Solutions to RP901 Error
  
  
  Review Wage Type Configuration: Check the configuration of the wage types involved in the payroll run. Ensure that they are set up correctly and that there are no restrictions preventing their combination.
  
  
  Check Payroll Schema: Review the payroll schema and rules to ensure that they are correctly defined. Look for any conditions that may be causing the incompatibility.
  
  
  Validate Master Data: Ensure that the employee master data is complete and accurate. Check relevant infotypes (e.g., infotype 0008 for basic pay, infotype 0014 for recurring payments) for any inconsistencies.
  
  
  Consult Documentation: Refer to SAP documentation or notes related to the specific wage types or payroll processes you are using. There may be specific guidelines or known issues documented by SAP.
  
  
  Debugging: If you have access to technical resources, consider debugging the payroll process to identify the exact point of failure. This can help pinpoint the specific combination causing the issue.
  
  
  SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address this specific error. There may be patches or updates that resolve known issues.
  
  
  Consult with SAP Support: If the issue persists and you cannot identify the cause, consider reaching out to SAP Support for assistance. They can provide guidance based on your specific configuration and setup.
  
  
  Related Information
  
  Transaction Codes: You may want to use transaction codes like SE38 (ABAP Editor) to run payroll-related reports or SE11 (Data Dictionary) to check the configuration of wage types.
  Infotypes: Familiarize yourself with relevant infotypes that may impact payroll processing, such as 0008 (Basic Pay), 0014 (Recurring Payments), and 0015 (Additional Payments).
  Testing: Always test changes in a development or quality assurance environment before applying them to production to avoid disruptions in payroll processing.
  
  By following these steps, you should be able to identify and resolve the cause of the RP901 error in your SAP payroll processing.