How To Fix PSSC_NET171 - NCD &1 not found in local buffer table CT_NCD (internal error)

SAP Error Message - Details

• Message type: E = Error

• Message class: PSSC_NET - Net Calculation

• Message number: 171

• Message text: NCD &1 not found in local buffer table CT_NCD (internal error)

What causes this issue?

The <DS:GLOS.49A5F736876A4422E10000000A421392>net calculation document
</> (NCD) &V1& was not found in an internal buffer table.

System Response

The system does not execute the
<DS:GLOS.49A5BAE5A2B21546E10000000A421392>net calculation</>.

How to fix this error?

Contact your system administrator.

Procedure for System Administrators

Check if this problem has been caused by a customer-specific adjustment.
If this is not the case, contact SAP and specify the NCD <LS>ObjectID
</>.
The problem has occured in class &V2&, method &V3&.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message PSSC_NET171 - NCD &1 not found in local buffer table CT_NCD (internal error) ?

  The SAP error message PSSC_NET171 indicates that a specific NCD (Network Control Data) entry, identified by the key &1, could not be found in the local buffer table CT_NCD. This is an internal error that typically arises in the context of network planning or project system modules.
  Cause:
  
  Data Inconsistency: The NCD entry may not exist in the database, possibly due to data inconsistency or corruption.
  Buffer Issues: The local buffer table CT_NCD may not have been populated correctly, or it may have been cleared or invalidated.
  Configuration Issues: There may be configuration issues in the system that prevent the proper loading of NCD data.
  System Bugs: There could be a bug in the SAP system that is causing this error to occur.
  
  Solution:
  
  
  Check Data Consistency:
  
  Verify that the NCD entry exists in the database. You can do this by checking the relevant tables in the database (e.g., using transaction SE11 or SE16).
  If the entry is missing, you may need to recreate it or restore it from a backup.
  
  
  
  Refresh Buffer:
  
  You can try to refresh the buffer for the NCD data. This can often be done by executing a transaction that forces the system to reload the data.
  You may also consider using transaction code SM12 to check for any locks that might be affecting the buffer.
  
  
  
  Check Configuration:
  
  Review the configuration settings related to network planning and ensure that everything is set up correctly.
  Consult with your SAP Basis team to ensure that the system is configured properly.
  
  
  
  SAP Notes and Support:
  
  Check the SAP Support Portal for any relevant SAP Notes that might address this specific error. There may be patches or updates available that resolve the issue.
  If the problem persists, consider reaching out to SAP Support for further assistance.
  
  
  
  System Logs:
  
  Review system logs (transaction SLG1) for any additional error messages or warnings that might provide more context about the issue.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SE11 (Data Dictionary), SE16 (Data Browser), and SM12 (Lock Entries).
  SAP Documentation: Refer to SAP Help documentation for detailed information on NCD and related processes.
  Community Forums: Engage with SAP community forums or user groups where similar issues may have been discussed.
  
  By following these steps, you should be able to diagnose and potentially resolve the PSSC_NET171 error in your SAP system.