How To Fix PRP051 - No logical system is defined

SAP Error Message - Details

• Message type: E = Error

• Message class: PRP - Project Resource Planning: General Messages

• Message number: 051

• Message text: No logical system is defined

What causes this issue?

The current system must be defined as a logical system for
communication with WFM Core.

System Response

Communication with the WFM Core system is not possible. Therefore, no
appointments are available in the application for resource assignments.
In addition, you cannot check or display the
availability and capacity utilization level of the resources.

How to fix this error?

Define a logical system in Customizing for the current system under
<LS>Logical Systems</>.

Procedure for System Administrators

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message PRP051 - No logical system is defined ?

  The SAP error message PRP051 ("No logical system is defined") typically occurs in the context of SAP systems when there is an issue with the configuration of logical systems, particularly in scenarios involving data transfer, such as in the use of IDocs, ALE (Application Link Enabling), or when working with distributed systems.
  Cause:
  
  Missing Logical System Configuration: The logical system that is being referenced in a transaction or configuration is not defined in the system.
  Incorrect Configuration: The logical system may be incorrectly configured or not assigned to the relevant client.
  Transport Issues: If you are working in a development environment and have transported objects to a different environment (like QA or Production), the logical system may not have been set up in the target environment.
  Client-Specific Settings: The logical system might be client-specific, and the client you are working in does not have the necessary settings.
  
  Solution:
  
  
  Define Logical System:
  
  Go to transaction code SALE (or SPRO for configuration).
  Navigate to ALE Interface > Logical Systems > Define Logical System.
  Create a new logical system if it does not exist, or ensure that the existing logical system is correctly defined.
  
  
  
  Assign Logical System to Client:
  
  In the same area, ensure that the logical system is assigned to the correct client.
  Use transaction code SCC4 to check the client settings and ensure that the logical system is assigned to the appropriate client.
  
  
  
  Check Distribution Model:
  
  If you are using ALE, ensure that the distribution model is correctly set up. Use transaction code BD64 to check the distribution model and ensure that the logical systems are included.
  
  
  
  Transport Configuration:
  
  If the issue arose after a transport, ensure that the logical system is defined in the target environment. You may need to create it manually if it was not included in the transport.
  
  
  
  Check User Authorizations:
  
  Ensure that the user has the necessary authorizations to access the logical system settings.
  
  
  
  Related Information:
  
  
  Transaction Codes:
  
  SALE: For ALE configuration.
  SPRO: For accessing the SAP Reference IMG.
  BD64: For managing distribution models.
  SCC4: For client settings.
  
  
  
  Documentation: Refer to SAP Help documentation for more details on logical systems and ALE configuration.
  
  
  SAP Notes: Check for any relevant SAP Notes that might address specific issues related to logical systems and the PRP051 error.
  
  
  By following these steps, you should be able to resolve the PRP051 error and ensure that your logical systems are correctly configured in your SAP environment.