How To Fix DT270 - Field & contains at least one invalid character

SAP Error Message - Details

• Message type: E = Error

• Message class: DT - Table activation (incl. indexes)

• Message number: 270

• Message text: Field & contains at least one invalid character

What causes this issue?

A field name containing characters which are not permitted, e.g.
because they only exist in certain languages, was used in a structure.

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?

Replace the field name. The following characters are permitted in the
field name of structures:
ABCDEFGHIJKLMNOPQRSTUVWXYZ_1234567890$%/&#@!*()~?<>.{}| and SPACE

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message DT270 - Field & contains at least one invalid character ?

  The SAP error message DT270, which states that "Field & contains at least one invalid character," typically occurs when a user attempts to enter data into a field that does not conform to the expected format or contains characters that are not allowed. This can happen in various contexts, such as during data entry, file uploads, or when processing transactions.
  Causes:
  
  Invalid Characters: The input may contain special characters, spaces, or symbols that are not permitted in the specific field.
  Field Length Exceeded: The input might exceed the maximum length defined for that field.
  Incorrect Data Type: The data type of the input may not match the expected type (e.g., entering text in a numeric field).
  Configuration Issues: The field may have specific validation rules set up in the system that are not being met.
  
  Solutions:
  
  Check Input Data: Review the data being entered into the field. Ensure that it does not contain any invalid characters (e.g., special characters like @, #, $, etc.) and adheres to the expected format.
  Trim Spaces: Remove any leading or trailing spaces from the input data.
  Validate Length: Ensure that the input does not exceed the maximum length allowed for the field.
  Correct Data Type: Make sure that the data type of the input matches the expected type for the field (e.g., numeric, alphanumeric).
  Review Field Configuration: If you have access, check the field configuration in the SAP system to understand any specific validation rules that may be applied.
  Consult Documentation: Refer to SAP documentation or help resources for specific details about the field and its constraints.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or updates related to this error message.
  Transaction Codes: Depending on where the error occurs, you may want to look into specific transaction codes related to the module you are working with (e.g., MM, SD, FI).
  User Authorization: Ensure that you have the necessary authorizations to enter data in the specific field.
  Testing in Development: If you are a developer or have access to a development environment, you can test the input in a controlled setting to identify the exact cause of the error.
  
  If the issue persists after trying the above solutions, it may be beneficial to consult with your SAP support team or a technical consultant for further assistance.