How To Fix /ACCGO/MCK_MAINT789 - Hyphen and underscore are not allowed as first character

SAP Error Message - Details

• Message type: E = Error

• Message class: /ACCGO/MCK_MAINT -

• Message number: 789

• Message text: Hyphen and underscore are not allowed as first character

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message /ACCGO/MCK_MAINT789 - Hyphen and underscore are not allowed as first character ?

  The SAP error message /ACCGO/MCK_MAINT789 indicates that there is an issue with the naming convention of a certain object or field in the system. Specifically, the error states that a hyphen (-) or underscore (_) cannot be used as the first character of the name. This is a common restriction in many programming and database environments to ensure that names are valid and do not conflict with reserved characters or keywords.
  Cause:
  
  Invalid Naming Convention: The object or field name you are trying to create or modify starts with a hyphen or underscore, which is not allowed.
  User Input Error: The user may have inadvertently entered a name that violates the naming rules.
  Data Migration or Upload Issues: If you are importing data or migrating from another system, the source data may contain invalid names.
  
  Solution:
  
  Rename the Object: Change the name of the object or field to ensure it does not start with a hyphen or underscore. Use valid characters (letters, numbers) as the first character.
  Check Naming Conventions: Review the naming conventions for the specific type of object you are working with in SAP. Ensure that all names conform to these rules.
  Data Validation: If you are importing data, validate the data beforehand to ensure that all names meet the required standards.
  Error Handling: Implement error handling in your data upload or migration scripts to catch and correct naming issues before they cause errors in SAP.
  
  Related Information:
  
  SAP Documentation: Refer to the official SAP documentation for guidelines on naming conventions for various objects (e.g., tables, fields, programs).
  SAP Community: Engage with the SAP Community forums for insights and solutions from other users who may have encountered similar issues.
  Transaction Codes: Familiarize yourself with relevant transaction codes (e.g., SE11 for Data Dictionary, SE80 for Object Navigator) to check and modify object names.
  
  By following these steps, you should be able to resolve the error and ensure that your object names comply with SAP's naming conventions.