How To Fix RPMFIOUT018 - Do not enter both cost element group and interval for no. &1

SAP Error Message - Details

• Message type: E = Error

• Message class: RPMFIOUT -

• Message number: 018

• Message text: Do not enter both cost element group and interval for no. &1

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message RPMFIOUT018 - Do not enter both cost element group and interval for no. &1 ?

  The SAP error message RPMFIOUT018 indicates that there is a conflict in the input parameters when trying to execute a function related to cost element groups and intervals. Specifically, the error arises when both a cost element group and an interval are entered simultaneously, which is not allowed.
  Cause:
  The error occurs because the system expects either a cost element group or an interval to be specified, but not both at the same time. This is a validation rule in SAP to ensure that the data being processed is consistent and unambiguous.
  Solution:
  To resolve this error, you need to ensure that you only enter one of the two parameters:
  
  Remove the Cost Element Group: If you have specified a cost element group, remove it and only provide the interval.
  Remove the Interval: Conversely, if you have specified an interval, remove it and only provide the cost element group.
  
  Related Information:
  
  Transaction Codes: This error may occur in various transactions related to cost accounting, such as those involving cost planning or reporting.
  Documentation: Refer to the SAP documentation for the specific module you are working with (e.g., Controlling (CO), Financial Accounting (FI)) for more details on how to correctly input data.
  SAP Notes: Check SAP Notes for any updates or patches that might address this issue or provide additional context.
  User Training: Ensure that users are trained on the correct input methods for the system to avoid similar errors in the future.
  
  By following these steps, you should be able to resolve the RPMFIOUT018 error and proceed with your task in SAP.