How To Fix /SAPAPO/MSDP_CAP021 - No alternative resource selected

SAP Error Message - Details

• Message type: E = Error

• Message class: /SAPAPO/MSDP_CAP -

• Message number: 021

• Message text: No alternative resource selected

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/MSDP_CAP021 - No alternative resource selected ?

  The SAP error message /SAPAPO/MSDP_CAP021 No alternative resource selected typically occurs in the context of Advanced Planning and Optimization (APO) when the system is unable to find a suitable resource for a specific operation or production process. This can happen for various reasons, and understanding the cause is crucial for resolving the issue.
  Causes:
  
  
  Resource Availability: The primary cause is often that there are no available resources that meet the requirements of the planned order or production process. This could be due to:
  
  Resources being fully booked or utilized.
  Resources being in maintenance or not available for the planned time period.
  
  
  
  Resource Selection Criteria: The selection criteria for resources may not be met. This can include:
  
  Incorrect or missing resource master data.
  Constraints or restrictions set on the resources that prevent them from being selected.
  
  
  
  Capacity Planning Issues: If the capacity planning settings are not configured correctly, it may lead to the system not being able to allocate resources effectively.
  
  
  Alternative Resources Not Defined: If alternative resources are not defined in the system, the planner may not have any fallback options when the primary resource is unavailable.
  
  
  Solutions:
  
  
  Check Resource Availability: 
  
  Review the resource utilization and availability in the system. Ensure that the resources are not overbooked or in maintenance during the required time frame.
  
  
  
  Review Resource Master Data: 
  
  Ensure that the resource master data is correctly maintained. Check for any missing or incorrect settings that could affect resource selection.
  
  
  
  Adjust Capacity Planning Settings: 
  
  Review and adjust the capacity planning settings to ensure that they align with the production requirements. This may involve adjusting the capacity of resources or changing the planning parameters.
  
  
  
  Define Alternative Resources: 
  
  If alternative resources are not defined, consider adding them to the resource master data. This will provide the system with additional options for resource selection.
  
  
  
  Check Planning Versions: 
  
  Ensure that you are working with the correct planning version and that it is properly configured to include the necessary resources.
  
  
  
  Run Capacity Check: 
  
  Perform a capacity check to identify any potential issues with resource allocation. This can help pinpoint specific problems that need to be addressed.
  
  
  
  Related Information:
  
  Transaction Codes: You may use transaction codes like /SAPAPO/MC90 (to check capacity) or /SAPAPO/RES01 (to view resource details) to investigate further.
  SAP Notes: Check for any relevant SAP Notes that may address specific issues related to this error message.
  Documentation: Review SAP documentation related to APO and resource planning for best practices and configuration guidelines.
  
  By following these steps, you should be able to identify the root cause of the error and implement a solution to resolve it. If the issue persists, consider reaching out to SAP support for further assistance.