How To Fix CL679 - Character "&1" is not allowed for format "&2"

SAP Error Message - Details

• Message type: E = Error

• Message class: CL - Classification

• Message number: 679

• Message text: Character "&1" is not allowed for format "&2"

What causes this issue?

You have entered a template character that is not defined for the
format you selected.

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?

Define all the template characters that you want to use in Customizing
for characteristics. You define which format is allowed for each
character.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CL679 - Character "&1" is not allowed for format "&2" ?

  The SAP error message CL679 indicates that a character used in a certain format is not allowed. This error typically arises in the context of data formatting, where specific characters are restricted based on the defined format rules.
  Cause:
  The error occurs when:
  
  A character that is not permitted in a specific format is used. For example, if a numeric field is expected but a special character or letter is provided.
  The format defined for a field does not accept certain characters, leading to validation failure.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Identify the Field and Format: Check the field that is causing the error and the format it is supposed to adhere to. The error message will usually provide details about the character (&1) and the format (&2).
  
  
  Review Input Data: Ensure that the data being inputted into the field conforms to the expected format. Remove or replace any invalid characters.
  
  
  Check Configuration: If you are working with custom fields or formats, review the configuration settings in the relevant transaction codes (like SE11 for Data Dictionary, SE80 for Object Navigator, etc.) to ensure that the format is correctly defined.
  
  
  Consult Documentation: Refer to SAP documentation or help resources for the specific module you are working with to understand the valid characters for the format in question.
  
  
  Testing: After making the necessary changes, test the input again to ensure that the error is resolved.
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  Transaction Codes: Familiarize yourself with relevant transaction codes that may help in debugging or configuring the formats (e.g., SE11, SE37, SE80).
  User Exits or BAdIs: If the error is occurring in a custom development, check if there are any user exits or BAdIs that might be affecting the data validation.
  
  If the issue persists after following these steps, consider reaching out to your SAP support team or consulting with an SAP expert for further assistance.