How To Fix KO318 - Order type & has int. no. assignment; you cannot enter the order number

SAP Error Message - Details

• Message type: E = Error

• Message class: KO - Master data for CO orders

• Message number: 318

• Message text: Order type & has int. no. assignment; you cannot enter the order number

What causes this issue?

An exception condition can arise because:
Internal number allocation is entered for the order type; however, an
order number is defined in the transfer structure.
The order number set in the transfer structure is not in a valid number
range.
The order number set in the transfer structure already exists in the
database.
The order number set in the transfer structure is already being
processed (errors occurred during order locking).
The order number set in the transfer structure cannot be processed at
all, due to a system error.

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 KO318 - Order type & has int. no. assignment; you cannot enter the order number ?

  The SAP error message KO318 indicates that you are trying to enter an order number for a production order or a process order that has an internal number assignment. This means that the system is set up to automatically generate order numbers rather than allowing users to manually enter them.
  Cause:
  The error occurs because:
  
  The order type you are working with is configured to use internal number assignment.
  You are attempting to manually enter an order number, which is not permitted for that order type.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Use the Correct Transaction: Instead of trying to enter an order number manually, use the appropriate transaction to create a new order. For example, use transaction codes like CO01 (Create Production Order) or COR1 (Create Process Order) to let the system generate the order number automatically.
  
  
  Check Order Type Configuration: If you believe that the order type should allow manual entry, you can check the configuration settings for that order type in the SAP Customizing Implementation Guide (IMG):
  
  Navigate to Logistics > Production > Shop Floor Control > Master Data > Order Types > Define Order Types.
  Review the settings for the specific order type to see if it is set to use internal number assignment.
  
  
  
  Consult with SAP Administrator: If you need to change the configuration to allow manual entry, consult with your SAP administrator or someone with the necessary authorization to make changes in the system.
  
  
  Review Documentation: Check the SAP documentation or help files for more information on the specific order type and its settings.
  
  
  Related Information:
  
  Order Types: Different order types in SAP (e.g., production orders, process orders) have different configurations and settings. Understanding these can help in troubleshooting similar issues.
  Number Ranges: Internal number assignment is linked to number ranges defined in the system. You can check the number range settings for the order type in the same configuration area.
  SAP Notes: Sometimes, specific issues may be addressed in SAP Notes. You can search the SAP Support Portal for any relevant notes related to error KO318.
  
  By following these steps, you should be able to resolve the KO318 error and proceed with your order processing in SAP.