How To Fix /SAPAPO/RRP_PT255 - You selected &1 resources; only one is allowed

SAP Error Message - Details

• Message type: E = Error

• Message class: /SAPAPO/RRP_PT -

• Message number: 255

• Message text: You selected &1 resources; only one is allowed

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 /SAPAPO/RRP_PT255 - You selected &1 resources; only one is allowed ?

  The SAP error message /SAPAPO/RRP_PT255 indicates that you have selected multiple resources in a context where only one resource is allowed. This typically occurs in the Advanced Planning and Optimization (APO) module of SAP, particularly when dealing with resource planning or capacity planning scenarios.
  Cause:
  The error is triggered when:
  
  You attempt to perform an operation (like planning, scheduling, or executing a task) that requires a single resource, but you have selected multiple resources.
  The system is configured to allow only one resource for the specific operation you are trying to perform.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Review Your Selection: Check the resources you have selected in the planning or scheduling screen. Ensure that you are only selecting one resource at a time.
  
  
  Adjust Your Planning Parameters: If you are using a planning transaction or report, ensure that the parameters you are using are set to allow for single resource selection.
  
  
  Check Configuration Settings: If you believe that multiple resources should be allowed, review the configuration settings in the APO system. This may involve checking the resource planning settings or the specific transaction settings.
  
  
  Consult Documentation: Refer to the SAP documentation or help files related to the specific transaction or process you are using. This can provide insights into the expected behavior and any limitations.
  
  
  Contact Support: If you are unable to resolve the issue, consider reaching out to your SAP support team or consulting with an SAP expert who can provide guidance based on your specific system configuration.
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with the transaction codes related to resource planning in APO, such as /SAPAPO/RRP for resource-related planning.
  SAP Notes: Check for any relevant SAP Notes that might address this error or provide additional context or solutions.
  User Forums: Engage with SAP community forums or user groups where similar issues may have been discussed, and solutions shared.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to proceed with your planning activities in SAP APO.