How To Fix IW316 - Change of control key not possible because purch. requis. already exists

IW316 - Overview

• Message type: E = Error

• Message class: IW - Order Processing

• Message number: 316

• Message text: Change of control key not possible because purch. requis. already exists

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.

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IW316 - Details

• The SAP error message IW316, which states "Change of control key not possible because purch. requis. already exists," typically occurs in the context of maintenance orders or work orders when there is an attempt to change the control key of an order that has already generated a purchase requisition. This error indicates that the system is preventing the change because it would affect the integrity of the existing purchase requisition.
  
  Cause:
  
  Existing Purchase Requisition: The primary cause of this error is that a purchase requisition has already been created for the maintenance order or work order. The control key is linked to how the order is processed, and changing it after a requisition has been generated can lead to inconsistencies.
  Control Key Restrictions: Certain control keys have specific functionalities and restrictions. Changing the control key may not be allowed if it alters the nature of the order in a way that conflicts with