How To Fix HRPAYTR03647 - Formula and external program cannot be used simultaneously

HRPAYTR03647 - Overview

• Message type: E = Error

• Message class: HRPAYTR03 -

• Message number: 647

• Message text: Formula and external program cannot be used simultaneously

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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HRPAYTR03647 - Details

• The SAP error message HRPAYTR03647, which states "Formula and external program cannot be used simultaneously," typically occurs in the context of payroll processing within the SAP HR module. This error indicates that there is a conflict between the use of a formula and an external program in the payroll calculation process.
  
  Cause:
  
  Conflicting Processing Methods: The error arises when a payroll calculation is attempting to use both a formula (a set of rules or calculations defined within SAP) and an external program (a custom or third-party program) at the same time. SAP does not allow these two methods to be executed concurrently for the same payroll run.
  
  Configuration Issues: There may be configuration settings in the payroll schema that are incorrectly set, leading to the system trying to execute both methods.
  Incorrect Schema or Rules: The payroll schema may have been modified or incorrectly set up, causing the system to attempt to call both