How To Fix CN288 - Network type &1 plant &2: No checking rule maintained for activity

CN288 - Overview

• Message type: E = Error

• Message class: CN - Meldungen für Netzpläne

• Message number: 288

• Message text: Network type &1 plant &2: No checking rule maintained for activity

What causes this issue?

A checking rule must be maintained in order to carry out a material
availability check. However, no checking rule has been maintained for
the network type &V1&, plant &V2& and the entered business transaction
(for example "created" or "released").

System Response

INCLUDE 'NA_ALLG_NOFUNKTION' OBJECT DOKU ID TX

How to fix this error?

INCLUDE 'NA_ALLG_VORGEHEN' OBJECT DOKU ID TX
Maintain in Customizing for the Project System:
a checking group for the network type,
the plant and
the business transaction.

Error message extract from SAP system. Copyright SAP SE.

CN288 - Details

• The SAP error message CN288 indicates that there is no checking rule maintained for a specific network type in a particular plant. This error typically arises in the context of project systems (PS) or network planning within SAP, where certain configurations are required to validate activities in a network.
  
  Cause:
  
  Missing Checking Rule: The primary cause of this error is that the system does not have a defined checking rule for the specified network type and plant combination. Checking rules are used to validate various aspects of network activities, such as costs, durations, and resource allocations.
  
  Configuration Issues: The error may also stem from incorrect or incomplete configuration settings in the project system or network planning module.
  Network Type Not Supported: The network type being used may not be supported in the current configuration, leading to the absence of a checking rule.
  
  
  Solution:
  To resolve the CN288 error, you can follow these steps:
  
  
  Define Checking Rules:
  
  Go to