How To Fix EM127 - Field name format is invalid

SAP Error Message - Details

• Message type: E = Error

• Message class: EM - IS-U Migration

• Message number: 127

• Message text: Field name format is invalid

What causes this issue?

You entered a field name that does not have a valid format.
Please note the following:
The field name must begin with a letter.
The field name may only consist of letters A to Z, digits 0 to 9, and _
or -.

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?

INCLUDE ISU_KORR OBJECT DOKU ID TX

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message EM127 - Field name format is invalid ?

  The SAP error message EM127, which states "Field name format is invalid," typically occurs when there is an issue with the naming convention or format of a field in a data structure, such as a table, structure, or report. This error can arise in various contexts, including ABAP programming, data dictionary definitions, or when working with custom fields.
  Causes:
  
  Invalid Characters: The field name may contain invalid characters or spaces. SAP field names must adhere to specific naming conventions, such as starting with a letter and containing only alphanumeric characters and underscores.
  Length Exceeded: The field name may exceed the maximum length allowed by SAP, which is typically 30 characters.
  Reserved Keywords: The field name may be using a reserved keyword or a name that conflicts with existing SAP objects.
  Incorrect Data Element: If the field is referencing a data element, the data element itself may have an invalid name or format.
  Namespace Issues: If you are working in a specific namespace, the field name may not conform to the required format for that namespace.
  
  Solutions:
  
  Check Naming Conventions: Ensure that the field name follows SAP's naming conventions. It should start with a letter, contain only letters, numbers, and underscores, and not exceed 30 characters.
  Rename the Field: If the field name is invalid, rename it to a valid format. Avoid using special characters and ensure it does not conflict with reserved keywords.
  Review Data Elements: If the field is based on a data element, check the data element's name and ensure it is valid.
  Consult Documentation: Refer to SAP documentation or guidelines for naming conventions and reserved keywords to ensure compliance.
  Check for Conflicts: Ensure that the field name does not conflict with existing fields or objects in the SAP system.
  
  Related Information:
  
  SAP Naming Conventions: Familiarize yourself with SAP's naming conventions for fields, tables, and other objects. This information can usually be found in the SAP Help Portal or ABAP programming guidelines.
  ABAP Development: If you are working in ABAP, consider using the ABAP Workbench (SE80) to check the properties of the field and ensure it is defined correctly.
  Error Logs: Check the error logs or dump analysis (transaction ST22) for more details on the error context, which may provide additional insights into the cause of the issue.
  
  If the problem persists after checking these aspects, consider reaching out to your SAP support team or consulting with an experienced SAP developer for further assistance.