How To Fix KO319 - Order type & has external number assignment; enter an order number

KO319 - Overview

• Message type: E = Error

• Message class: KO - Master data for CO orders

• Message number: 319

• Message text: Order type & has external number assignment; enter an order number

What causes this issue?

This exception condition may have occurred because the order type
stipulates external number allocation, but no order number has been set
in the transfer structure PKOSA.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message KO319 - Order type & has external number assignment; enter an order number ?

  The SAP error message KO319 indicates that you are trying to create or process an order of a specific order type that is configured to use external number assignment. This means that the system expects you to provide a specific order number rather than generating one automatically.
  
  Cause:
  The error occurs when:
  
  You attempt to create a production order or a similar order type that is set to use external number assignment.
  You do not provide an order number when prompted, or the system does not generate one automatically.
  
  
  Solution:
  To resolve this error, you need to provide a valid order number when creating the order. Here are the steps you can take:
  
  
  Manually Enter an Order Number: When prompted for an order number, enter a valid number that adheres to the number range defined for that order type.
  
  
  Check Number Ranges: Ensure that the number range for the order type is correctly defined and that you are