How To Fix M8666 - Negative acceptance lower limit is greater than negative small difference

SAP Error Message - Details

• Message type: E = Error

• Message class: M8 - Invoice Verification/Valuation

• Message number: 666

• Message text: Negative acceptance lower limit is greater than negative small difference

What causes this issue?

You have entered a negative acceptance lower limit &V1& that is greater
than the negative small difference &V2&.

System Response

With this setting, the negative acceptance lower limit has no meaning
and is therefore ignored. Such a setting does not make sense.

How to fix this error?

Please correct your entries.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message M8666 - Negative acceptance lower limit is greater than negative small difference ?

  The SAP error message M8666, which states "Negative acceptance lower limit is greater than negative small difference," typically occurs in the context of inventory management or quality management when dealing with inspection lots and acceptance criteria.
  Cause:
  This error arises when the acceptance criteria defined for a quality inspection lot are inconsistent. Specifically, it indicates that the negative acceptance lower limit (the minimum acceptable value for a measurement) is set to a value that is greater than the negative small difference (the smallest allowable deviation from the acceptance limit). This inconsistency leads to a logical error in the acceptance criteria.
  Solution:
  To resolve this error, you need to review and adjust the acceptance criteria for the inspection lot. Here are the steps you can take:
  
  
  Check Inspection Plan: Review the inspection plan associated with the material or process. Ensure that the acceptance limits are correctly defined.
  
  
  Adjust Acceptance Limits:
  
  Navigate to the inspection plan in SAP.
  Check the settings for the acceptance criteria, particularly the negative acceptance lower limit and the negative small difference.
  Ensure that the negative acceptance lower limit is less than or equal to the negative small difference.
  
  
  
  Review Material Master Data: If the inspection plan is correct, check the material master data for any inconsistencies that might affect the inspection criteria.
  
  
  Consult Documentation: Refer to SAP documentation or help resources for guidance on setting up inspection plans and acceptance criteria correctly.
  
  
  Testing: After making adjustments, create a test inspection lot to ensure that the error does not reoccur.
  
  
  Consult with SAP Support: If the issue persists after making the necessary adjustments, consider reaching out to SAP support for further assistance.
  
  
  Related Information:
  
  Transaction Codes: You may need to use transaction codes such as QP01 (Create Inspection Plan), QP02 (Change Inspection Plan), or QA32 (Display Inspection Lot) to review and modify the relevant data.
  Quality Management Module: This error is primarily related to the Quality Management (QM) module in SAP, so familiarity with QM processes and settings will be beneficial.
  User Roles: Ensure that you have the necessary permissions to modify inspection plans and material master data.
  
  By following these steps, you should be able to resolve the M8666 error and ensure that your acceptance criteria are logically consistent.