How To Fix KM670 - Document type with external number assignment cannot be used

KM670 - Overview

• Message type: E = Error

• Message class: KM - Error messages for Profit Center Accounting

• Message number: 670

• Message text: Document type with external number assignment cannot be used

What causes this issue?

You have chosen document type &V1&. Document type &V1& uses number
range interval &V2& of number range object &V3&.
External document number assignment is used for number range interval
&V2&. However, you cannot use a document type with external document
number assignment for this transaction.

System Response

Processing was terminated.

How to fix this error?

Choose a document type with internal document number assignment.

Procedure for System Administrators

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.

KM670 - Details

• The SAP error message KM670, which states "Document type with external number assignment cannot be used," typically occurs when you are trying to create a document using a document type that is configured for external number assignment, but the system is expecting an internal number assignment or vice versa.
  
  Cause:
  
  Document Type Configuration: The document type you are using is set up for external number assignment, meaning that the system expects you to provide a number manually or through an external source.
  Number Range Assignment: The number range for the document type may not be properly defined or may not allow for the creation of new documents.
  Incorrect Document Type Usage: You may be using a document type that is not appropriate for the transaction you are trying to perform.
  
  
  Solution:
  
  
  Check Document Type Configuration:
  
  Go to the configuration settings for the document type in question (Transaction code: OBA7 or SPRO).
  Verify that the document type is indeed