How To Fix OM306 - Check is not possible at this level

SAP Error Message - Details

• Message type: E = Error

• Message class: OM - Customizing Materialwirtschaft

• Message number: 306

• Message text: Check is not possible at this level

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 OM306 - Check is not possible at this level ?

  The SAP error message "OM306: Check is not possible at this level" typically occurs in the context of configuration settings related to the controlling (CO) module, particularly when dealing with cost centers, internal orders, or other controlling objects. This error indicates that the system is unable to perform a check or validation at the specified level of the hierarchy or structure.
  Causes:
  
  
  Incorrect Hierarchy Level: The error often arises when the system is trying to validate or check a configuration at a level where it is not applicable. For example, if you are trying to assign a cost center to a higher-level structure that does not support that assignment.
  
  
  Missing Configuration: There may be missing or incomplete configuration settings in the controlling area, such as missing cost center groups or internal order types.
  
  
  Inconsistent Data: There could be inconsistencies in the data entered, such as incorrect master data for cost centers or internal orders.
  
  
  Authorization Issues: Sometimes, the user may not have the necessary authorizations to perform the check or access certain levels of the hierarchy.
  
  
  Solutions:
  
  
  Check Configuration: Review the configuration settings in the controlling area. Ensure that all necessary settings are correctly defined and that the hierarchy levels are properly set up.
  
  
  Validate Master Data: Ensure that all relevant master data (cost centers, internal orders, etc.) is correctly maintained and that there are no inconsistencies.
  
  
  Review Hierarchy Levels: Make sure that you are trying to perform the check at the correct level of the hierarchy. If necessary, adjust the level at which you are trying to perform the operation.
  
  
  Authorization Check: Verify that the user has the necessary authorizations to perform the action. If not, consult with your SAP security team to obtain the required permissions.
  
  
  Consult Documentation: Refer to SAP documentation or help resources for specific guidance related to the configuration you are working with.
  
  
  Debugging: If the issue persists, consider using transaction codes like SE80 or SE37 to debug the program or function module that is generating the error. This may provide more insight into the root cause.
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as OX02 (for cost center settings), OX03 (for cost center groups), and others related to controlling.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. SAP frequently updates its knowledge base with solutions to common problems.
  Community Forums: Engage with SAP community forums or user groups where similar issues may have been discussed, and solutions shared.
  
  If the problem continues after trying these solutions, it may be beneficial to reach out to your SAP support team or a consultant with expertise in SAP CO module configurations.