How To Fix UCFE879 - The value of field &1 may not be &2

SAP Error Message - Details

• Message type: E = Error

• Message class: UCFE - Messages for Data Entry Layouts

• Message number: 879

• Message text: The value of field &1 may not be &2

What causes this issue?

<DS:DE.UC_BREAKDOWN>Breakdown type 4</> has been defined for item &V3&
for field &V1&. However, the value of field &V1& is the default value.

System Response

The system will delete the value of field &V1&.

How to fix this error?

Enter a value for field &V1& other than the default value.

Procedure for System Administrators

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

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message UCFE879 - The value of field &1 may not be &2 ?

  The SAP error message UCFE879 indicates that a specific field in your SAP system has a value that is not allowed based on the defined business rules or constraints. The message format typically includes placeholders like &1 for the field name and &2 for the invalid value.
  Cause:
  The error occurs when:
  
  A field is populated with a value that does not meet the validation criteria set in the system.
  The value may be outside of an acceptable range, or it may not conform to the expected format or type.
  There may be configuration settings or business rules that restrict the values that can be entered into that field.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Identify the Field and Value: Check the error message to identify which field (&1) is causing the issue and what the invalid value (&2) is.
  
  
  Review Field Constraints: Look into the configuration or validation rules associated with that field. This may involve:
  
  Checking the data element or domain associated with the field to understand the allowed values.
  Reviewing any custom validation logic that may be in place.
  
  
  
  Correct the Value: Update the value in the field to one that is acceptable according to the defined rules. This may involve:
  
  Changing the value to one that is within the allowed range.
  Ensuring the format of the value matches the expected format (e.g., date formats, numeric formats).
  
  
  
  Consult Documentation: If you are unsure about the constraints, refer to the SAP documentation or consult with your SAP functional consultant for guidance on the specific field and its requirements.
  
  
  Testing: After making the necessary changes, test the transaction or process again to ensure that the error does not reoccur.
  
  
  Related Information:
  
  Transaction Codes: Depending on where the error occurs, you may be using various transaction codes (e.g., VA01 for sales orders, ME21N for purchase orders, etc.).
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  Debugging: If you have access to debugging tools, you can analyze the program logic to see why the value is being rejected.
  
  If the issue persists after following these steps, it may be beneficial to engage with your SAP support team or a consultant who can provide deeper insights into the specific configuration of your SAP environment.