How To Fix /SAPAPO/MC01HEUR021 - Select valid blocks or a valid resource

SAP Error Message - Details

• Message type: E = Error

• Message class: /SAPAPO/MC01HEUR -

• Message number: 021

• Message text: Select valid blocks or a valid resource

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.

Unfortunately, there isn't any extra information in this error notice.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message /SAPAPO/MC01HEUR021 - Select valid blocks or a valid resource ?

  The SAP error message /SAPAPO/MC01HEUR021 Select valid blocks or a valid resource typically occurs in the context of Advanced Planning and Optimization (APO) when you are trying to execute a heuristic or planning run, and the system cannot find valid blocks or resources to process.
  Cause:
  
  Invalid Resource Selection: The resource you are trying to use in the planning run may not be valid or may not be available for the selected planning period.
  Block Configuration Issues: The blocks defined in the planning area may not be correctly configured or may not exist for the selected resource.
  Planning Area Settings: The planning area may not have been set up correctly, or the necessary master data (like resources, products, etc.) may be missing or incorrectly defined.
  Data Inconsistencies: There may be inconsistencies in the master data or transaction data that prevent the heuristic from finding valid blocks or resources.
  
  Solution:
  
  Check Resource Availability: Ensure that the resource you are trying to use is available and valid for the planning period you are working with. You can do this by checking the resource master data in the system.
  Review Block Configuration: Verify that the blocks are correctly defined in the planning area. Ensure that the blocks are assigned to the correct resources and that they are active.
  Validate Planning Area Settings: Check the settings of the planning area to ensure that all necessary master data is correctly defined and available. This includes checking the configuration of the planning area and ensuring that all relevant data is loaded.
  Check Master Data: Ensure that all relevant master data (like products, resources, and locations) is correctly maintained and that there are no missing entries.
  Run Consistency Checks: Use transaction codes like /SAPAPO/MC01 to run consistency checks on the planning area and resources to identify any issues.
  Consult Documentation: Refer to SAP documentation or notes related to the specific heuristic you are using for any additional configuration or requirements.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as /SAPAPO/MC01 (Heuristic) and /SAPAPO/MC02 (Planning Book) to navigate and troubleshoot.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  APO Configuration: Understanding the configuration of APO, including the setup of planning areas, resources, and blocks, can help prevent this error in the future.
  User Forums: Consider checking SAP community forums or user groups for similar issues and solutions shared by other users.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.