How To Fix J4102 - Only certain characters are permitted for table names and field names

SAP Error Message - Details

• Message type: E = Error

• Message class: J4 - External Data Transfer

• Message number: 102

• Message text: Only certain characters are permitted for table names and field names

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 J4102 - Only certain characters are permitted for table names and field names ?

  The SAP error message J4102 indicates that there is an issue with the naming conventions used for table names or field names in your SAP system. This error typically arises when the names contain invalid characters or do not conform to the required naming standards.
  Cause:
  The error is triggered when:
  
  Invalid Characters: The table or field name includes characters that are not allowed. For example, special characters (like spaces, punctuation, etc.) or starting with a number.
  Length Restrictions: The name exceeds the maximum length allowed for table or field names.
  Naming Conventions: The name does not follow the SAP naming conventions, which typically require names to start with a letter and can include letters, numbers, and underscores.
  
  Solution:
  To resolve the J4102 error, you can take the following steps:
  
  
  Check Naming Conventions:
  
  Ensure that the table or field name starts with a letter.
  Use only allowed characters: letters (A-Z, a-z), numbers (0-9), and underscores (_).
  Avoid using special characters, spaces, or starting with a number.
  
  
  
  Review Length:
  
  Verify that the name does not exceed the maximum length (usually 30 characters for table names and field names in SAP).
  
  
  
  Rename the Object:
  
  If the name is invalid, rename the table or field to comply with the naming conventions. You can do this in the Data Dictionary (SE11) or the relevant transaction code.
  
  
  
  Check for Existing Objects:
  
  Ensure that the name you are trying to use is not already taken by another object in the system.
  
  
  
  Use Transaction Codes:
  
  Use transaction codes like SE11 (Data Dictionary) to create or modify tables and fields, ensuring you follow the naming rules.
  
  
  
  Related Information:
  
  SAP Naming Conventions: Familiarize yourself with SAP's naming conventions for database objects, which can be found in the SAP documentation or help files.
  SAP Notes: Check for any relevant SAP Notes that might provide additional context or solutions related to this error.
  Testing: After making changes, test the creation or modification of the table/field again to ensure the error is resolved.
  
  By following these guidelines, you should be able to resolve the J4102 error and successfully create or modify your SAP database objects.