How To Fix EU188 - &1 is not allowed for field &2

SAP Error Message - Details

• Message type: E = Error

• Message class: EU - Development Environment

• Message number: 188

• Message text: &1 is not allowed for field &2

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message EU188 - &1 is not allowed for field &2 ?

  The SAP error message "EU188 &1 is not allowed for field &2" typically indicates that there is an issue with the value being entered into a specific field in the SAP system. This error is often related to data validation rules that restrict certain values for specific fields.
  Cause:
  
  Invalid Value: The value entered in the field does not meet the predefined criteria or is not allowed based on the configuration of the system.
  Field Restrictions: The field may have specific restrictions based on the business logic or configuration settings in the SAP system.
  Data Type Mismatch: The value being entered may not match the expected data type for that field (e.g., entering a string where a number is expected).
  Custom Validation: There may be custom validation rules implemented in the system that restrict certain values.
  
  Solution:
  
  Check Field Requirements: Review the field's requirements and restrictions in the SAP documentation or configuration settings to understand what values are allowed.
  Correct the Input: Ensure that the value being entered is valid and meets the criteria for that field. This may involve selecting a different value or formatting the input correctly.
  Consult with Configuration Team: If you believe the value should be allowed, consult with your SAP configuration team to review the field settings and validation rules.
  Debugging: If you have access to debugging tools, you can trace the program to see where the validation is failing and understand the logic behind it.
  SAP Notes: Check for any relevant SAP Notes that may address this error or provide additional context or solutions.
  
  Related Information:
  
  Transaction Codes: Depending on where the error occurs, you may be using specific transaction codes (e.g., VA01 for sales orders, ME21N for purchase orders) that could be relevant to the context of the error.
  Field Documentation: Look for field documentation in the SAP system (using F1 help) to get more information about the field and its allowed values.
  User Roles and Authorizations: Ensure that the user has the necessary authorizations to enter data in the specified field, as restrictions may also be based on user roles.
  
  If the issue persists after checking these aspects, it may be beneficial to reach out to SAP support or your internal IT team for further assistance.