How To Fix IW400 - *** Number assignment ***

SAP Error Message - Details

• Message type: E = Error

• Message class: IW - Order Processing

• Message number: 400

• Message text: *** Number assignment ***

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.

Unfortunately, there isn't any extra information in this error notice.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message IW400 - *** Number assignment *** ?

  The SAP error message IW400, which pertains to "Number assignment," typically occurs in the context of creating or processing maintenance orders or notifications in the SAP system. This error indicates that there is an issue with the number assignment for the maintenance order or notification you are trying to create.
  Causes of IW400 Error
  
  
  Number Range Issues: The most common cause is that the number range for the maintenance orders or notifications is either exhausted or not properly configured. This can happen if the defined number range has been fully utilized or if there are restrictions on the number range.
  
  
  Authorization Issues: Sometimes, the user may not have the necessary authorizations to create a new order or notification, which can lead to this error.
  
  
  Configuration Errors: Incorrect configuration in the customizing settings for number ranges in the SAP system can also lead to this error.
  
  
  System Settings: The system may not be set up to allow the creation of new numbers in the specified range.
  
  
  Solutions to IW400 Error
  
  
  Check Number Range Configuration:
  
  Go to the transaction code SNRO (Number Range Objects).
  Find the relevant number range object for maintenance orders (e.g., PM_ORDER for orders or PM_NOTIFICATION for notifications).
  Check the current status of the number range and see if it is exhausted. If it is, you may need to extend the number range.
  
  
  
  Extend Number Range:
  
  If the number range is exhausted, you can extend it by editing the number range intervals in the same SNRO transaction.
  Ensure that the new range does not overlap with existing numbers.
  
  
  
  Check Authorizations:
  
  Ensure that the user has the necessary authorizations to create maintenance orders or notifications. This can be checked in the user roles and profiles.
  
  
  
  Review Configuration:
  
  Check the configuration settings in the SAP Customizing Implementation Guide (SPRO) under the relevant area for Plant Maintenance (PM) to ensure that the number range is correctly set up.
  
  
  
  Consult with Basis Team:
  
  If you are unable to resolve the issue, it may be necessary to consult with your SAP Basis team or system administrator to check for any underlying system issues or settings that may be affecting number assignment.
  
  
  
  Related Information
  
  
  Transaction Codes: 
  
  IW31 (Create Maintenance Order)
  IW21 (Create Notification)
  SNRO (Number Range Objects)
  SPRO (SAP Customizing Implementation Guide)
  
  
  
  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 related to the IW400 error.
  
  
  By following these steps, you should be able to identify and resolve the IW400 error in your SAP system.