How To Fix QS168 - Select a tolerance key that corresponds to the type of characteristic

SAP Error Message - Details

• Message type: E = Error

• Message class: QS - QM: Master data

• Message number: 168

• Message text: Select a tolerance key that corresponds to the type of characteristic

What causes this issue?

Example: You have selected control indicators for the characteristic
that stipulate only the upper tolerance is relevant. However, you have
selected a tolerance key for which the lower tolerance is relevant.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Select control indicators and a control key that are compatible.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message QS168 - Select a tolerance key that corresponds to the type of characteristic ?

  The SAP error message QS168, "Select a tolerance key that corresponds to the type of characteristic," typically occurs in the context of Quality Management (QM) when you are trying to assign a tolerance key to a characteristic that is not compatible with the type of characteristic you are working with. This can happen during the creation or modification of inspection plans, inspection characteristics, or quality notifications.
  Cause:
  The error is caused by one of the following reasons:
  
  Incompatible Tolerance Key: The tolerance key you are trying to assign does not match the data type of the characteristic (e.g., a tolerance key for a quantitative characteristic cannot be assigned to a qualitative characteristic).
  Incorrect Configuration: The tolerance key may not be properly configured in the system to be used with the specific type of characteristic.
  Missing Tolerance Key: The tolerance key may not exist for the characteristic type you are trying to use.
  
  Solution:
  To resolve the QS168 error, you can take the following steps:
  
  
  Check Characteristic Type: Verify the type of characteristic you are working with (quantitative, qualitative, etc.) and ensure that the tolerance key you are trying to assign is appropriate for that type.
  
  
  Review Tolerance Keys: Go to the configuration settings for tolerance keys in SAP (Transaction Code: OQ01 for creating a tolerance key or OQ02 for changing it) and check the settings. Ensure that the tolerance key is defined correctly and is compatible with the characteristic type.
  
  
  Assign Correct Tolerance Key: If the tolerance key is not compatible, select a different tolerance key that matches the characteristic type. You can do this in the inspection plan or characteristic settings.
  
  
  Consult Documentation: If you are unsure about which tolerance key to use, refer to the SAP documentation or consult with your SAP QM module expert for guidance on the appropriate keys for your specific use case.
  
  
  Testing: After making the necessary changes, test the configuration by attempting to save or process the inspection plan or characteristic again to ensure that the error is resolved.
  
  
  Related Information:
  
  SAP QM Module: Understanding the Quality Management module in SAP can help you better navigate and resolve issues related to inspection plans and characteristics.
  Tolerance Keys: Familiarize yourself with how tolerance keys are defined and used within the QM module, as they play a crucial role in quality inspections.
  SAP Notes: Check for any relevant SAP Notes that may address specific issues or provide additional guidance related to error QS168.
  
  By following these steps, you should be able to resolve the QS168 error and continue with your quality management processes in SAP.