How To Fix BG018 - Number range does not allow external number assignment

SAP Error Message - Details

• Message type: E = Error

• Message class: BG - Warranty processing

• Message number: 018

• Message text: Number range does not allow external number assignment

What causes this issue?

Your system setup does not allow external number assignment.

System Response

The system assigns an internal number.

How to fix this error?

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message BG018 - Number range does not allow external number assignment ?

  The SAP error message BG018 indicates that the number range you are trying to use does not allow external number assignment. This typically occurs when you are attempting to create a document (such as a purchase order, sales order, etc.) using an external number that is not permitted by the configuration of the number range.
  Cause:
  
  Number Range Configuration: The number range for the document type you are trying to create is set to "Internal" only, meaning that the system generates the numbers automatically and does not allow users to input their own external numbers.
  Document Type Settings: The specific document type you are working with may have been configured to restrict external number assignment.
  User Authorization: In some cases, user roles and authorizations may restrict the ability to use certain number ranges.
  
  Solution:
  To resolve the BG018 error, you can take the following steps:
  
  
  Check Number Range Configuration:
  
  Go to the transaction code SNRO (Number Range Objects).
  Find the relevant number range object for the document type you are working with.
  Check the settings to see if the number range is set to allow external number assignment. If it is set to "Internal," you may need to change it to allow external numbers.
  
  
  
  Change Document Type Settings:
  
  Use transaction code OBA7 to check the settings for the document type.
  Ensure that the document type is configured to allow external number assignment if that is your requirement.
  
  
  
  Use Internal Number Assignment:
  
  If external number assignment is not necessary, you can simply allow the system to generate the number for you by using the internal number assignment option.
  
  
  
  Consult with SAP Basis or Configuration Team:
  
  If you do not have the necessary permissions to change the number range settings, consult with your SAP Basis or configuration team to make the required adjustments.
  
  
  
  User Authorizations:
  
  Ensure that your user role has the necessary authorizations to use the number range you are trying to access.
  
  
  
  Related Information:
  
  Transaction Codes: 
  
  SNRO: To manage number range objects.
  OBA7: To configure document types and their number range settings.
  
  
  Documentation: Refer to SAP Help documentation for detailed information on number range management and configuration.
  SAP Notes: Check for any relevant SAP Notes that may address specific issues or provide additional guidance related to number range errors.
  
  By following these steps, you should be able to resolve the BG018 error and successfully create the document you are working on.