How To Fix EU333 - The program name is reserved or contains invalid characters

SAP Error Message - Details

• Message type: E = Error

• Message class: EU - Development Environment

• Message number: 333

• Message text: The program name is reserved or contains invalid characters

What causes this issue?

The program name you entered is either reserved or it contains
non-allowed characters.
Reserved program names are:
SAPL... for function groups
L... for includes in a function group
SAPDB... for logical database
MST... for table maintenance programs
%_C... for type groups
MENU... for menus
Non-allowed characters are:
. , ( ) ' " = - + _ ?
The (/) character is only permitted in program names to delimit the
namespace.

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?

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message EU333 - The program name is reserved or contains invalid characters ?

  The SAP error message EU333 indicates that the program name you are trying to use is either reserved or contains invalid characters. This error typically occurs when you attempt to create or modify a program in the ABAP Workbench (SE80 or SE38) and the name does not conform to SAP's naming conventions.
  Causes:
  
  Reserved Names: Certain program names are reserved by SAP and cannot be used. This includes names that start with specific prefixes or are part of the SAP standard.
  Invalid Characters: The program name may contain characters that are not allowed. For example, program names should only consist of alphanumeric characters and underscores.
  Length Restrictions: The program name may exceed the maximum length allowed by SAP, which is typically 30 characters.
  Naming Conventions: The program name may not follow the required naming conventions, such as starting with a specific character or prefix.
  
  Solutions:
  
  Choose a Different Name: Select a new program name that does not conflict with reserved names and adheres to the naming conventions. A common practice is to start custom program names with a specific prefix (e.g., Z or Y) to indicate that it is a custom development.
  Check for Invalid Characters: Ensure that the program name only contains valid characters (letters, numbers, and underscores) and does not include spaces or special characters.
  Verify Length: Make sure the program name does not exceed the maximum length of 30 characters.
  Consult Documentation: Refer to SAP documentation or guidelines regarding naming conventions for ABAP programs to ensure compliance.
  
  Related Information:
  
  SAP Naming Conventions: Familiarize yourself with SAP's naming conventions for various objects (programs, function modules, classes, etc.) to avoid similar issues in the future.
  Transaction Codes: Use transaction codes SE80 (Object Navigator) or SE38 (ABAP Editor) to create or modify programs, and ensure you are following the correct procedures.
  SAP Notes: Check for any relevant SAP Notes that may provide additional information or updates regarding naming conventions or reserved names.
  
  By following these guidelines, you should be able to resolve the EU333 error and successfully create or modify your ABAP program.