How To Fix CN539 - Network &1 is allowed for only one purchase requistition

SAP Error Message - Details

• Message type: E = Error

• Message class: CN - Meldungen für Netzpläne

• Message number: 539

• Message text: Network &1 is allowed for only one purchase requistition

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message CN539 - Network &1 is allowed for only one purchase requistition ?

  The SAP error message CN539 indicates that a specific network (in project management) is allowed for only one purchase requisition. This typically occurs in the context of project systems (PS) or when dealing with network activities in SAP.
  Cause:
  The error arises when you attempt to assign multiple purchase requisitions to a network that is configured to allow only one purchase requisition. This restriction is often set in the project system configuration to maintain control over procurement processes and ensure that each network is linked to a single purchase requisition for tracking and reporting purposes.
  Solution:
  To resolve this error, you can consider the following approaches:
  
  
  Check Network Configuration:
  
  Review the configuration settings for the network in question. Ensure that the network is indeed set to allow only one purchase requisition. If necessary, you may need to adjust the configuration to allow multiple purchase requisitions if that aligns with your business process.
  
  
  
  Use a Different Network:
  
  If the network is restricted to a single purchase requisition, consider using a different network for the additional purchase requisitions you need to create.
  
  
  
  Consolidate Purchase Requisitions:
  
  If possible, consolidate the items or services you need into a single purchase requisition that can be linked to the network.
  
  
  
  Consult Documentation:
  
  Review SAP documentation or consult with your SAP support team to understand the specific configuration settings that govern this behavior in your system.
  
  
  
  Check for Customizations:
  
  If your organization has custom developments or enhancements in place, check if any custom logic is enforcing this restriction and whether it can be modified.
  
  
  
  Related Information:
  
  Transaction Codes: You may need to use transaction codes like CJ20N (Project Builder) or ME51N (Create Purchase Requisition) to manage projects and purchase requisitions.
  SAP Notes: Look for relevant SAP Notes that might address this specific error or provide additional insights into the configuration settings.
  User Roles and Authorizations: Ensure that you have the necessary authorizations to make changes to networks and purchase requisitions.
  
  If the issue persists after trying the above solutions, it may be beneficial to engage with your SAP support team or a consultant who specializes in SAP Project Systems for further assistance.