How To Fix RQ018 - Invalid combination. Only one entry permitted.

SAP Error Message - Details

• Message type: E = Error

• Message class: RQ - Messages for Cash Management and Forecast

• Message number: 018

• Message text: Invalid combination. Only one entry permitted.

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 RQ018 - Invalid combination. Only one entry permitted. ?

  The SAP error message RQ018 "Invalid combination. Only one entry permitted." typically occurs in the context of SAP's Revenue Recognition or similar modules where certain combinations of data entries are restricted. This error indicates that the system has detected an attempt to create or modify a record that violates the rules set for valid combinations of data.
  Cause:
  
  Data Entry Violation: The error usually arises when a user tries to enter multiple entries for a field or combination of fields that are only allowed to have a single entry. This could be due to incorrect data input or misunderstanding of the system's requirements.
  Configuration Settings: The configuration settings in the SAP system may restrict certain combinations of data entries. For example, if a specific combination of account types or revenue recognition methods is not allowed, attempting to enter them together will trigger this error.
  Business Rules: There may be business rules defined in the system that limit the number of entries for certain transactions or records.
  
  Solution:
  
  Review Data Entries: Check the entries you are trying to save or modify. Ensure that you are not attempting to enter multiple records where only one is allowed. Look for fields that may have restrictions.
  Consult Documentation: Refer to the SAP documentation or configuration guides related to the specific module you are working with. This can provide insights into valid combinations and restrictions.
  Check Configuration: If you have access, review the configuration settings in the SAP system to understand the rules governing the entries. This may involve checking the settings in the IMG (Implementation Guide) for the relevant module.
  Seek Help from SAP Support: If you are unable to resolve the issue, consider reaching out to your SAP support team or consulting SAP Notes for any known issues or patches related to this error message.
  
  Related Information:
  
  Transaction Codes: Depending on the context, you may be using specific transaction codes related to revenue recognition, billing, or other financial processes.
  SAP Notes: Search for SAP Notes related to error RQ018 for any specific fixes or updates that may address the issue.
  User Roles and Permissions: Ensure that the user role has the necessary permissions to perform the actions being attempted, as sometimes restrictions can be role-based.
  
  By following these steps, you should be able to identify the cause of the RQ018 error and implement a solution to resolve it.