How To Fix CN888 - Problem in forming ITAB with relationships (LNWBTU27)

SAP Error Message - Details

• Message type: E = Error

• Message class: CN - Meldungen für Netzpläne

• Message number: 888

• Message text: Problem in forming ITAB with relationships (LNWBTU27)

What causes this issue?

An internal error occurred when creating Table ITAB using program
LNWBTU27.

System Response

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

INCLUDE 'NA_ALLG_NOVERARBEITUNG' OBJECT DOKU ID TX

How to fix this error?

INCLUDE 'NA_ALLG_SYSTEMVERW' OBJECT DOKU ID TX

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CN888 - Problem in forming ITAB with relationships (LNWBTU27) ?

  The SAP error message CN888, which states "Problem in forming ITAB with relationships (LNWBTU27)," typically occurs in the context of project management or construction-related modules, particularly when dealing with network activities and relationships in SAP.
  Cause:
  The error CN888 usually arises due to issues in the internal table (ITAB) that is being formed for processing relationships between activities in a project. Common causes include:
  
  Data Inconsistencies: There may be inconsistencies or missing data in the project structure, such as missing relationships between activities or incorrect data entries.
  Configuration Issues: Incorrect configuration settings in the project management module can lead to problems in processing relationships.
  Technical Issues: There may be issues with the underlying ABAP code or program logic that is responsible for forming the internal table.
  Database Locks: If there are locks on the database tables that the program is trying to access, it can lead to this error.
  
  Solution:
  To resolve the CN888 error, you can take the following steps:
  
  
  Check Data Integrity:
  
  Review the project structure and ensure that all activities have valid relationships defined.
  Look for any missing or incorrect entries in the project data.
  
  
  
  Review Configuration:
  
  Check the configuration settings in the project management module to ensure they are set up correctly.
  Ensure that all necessary customizing settings are in place.
  
  
  
  Debugging:
  
  If you have access to the ABAP debugger, you can analyze the program that is generating the error to identify where the issue is occurring.
  Look for any specific conditions or data that might be causing the internal table formation to fail.
  
  
  
  Check for Locks:
  
  Use transaction codes like SM12 to check for any locks on the relevant database tables and resolve them if necessary.
  
  
  
  Consult SAP Notes:
  
  Search the SAP Support Portal for any relevant SAP Notes that might address this specific error. There may be patches or updates available that resolve known issues.
  
  
  
  Contact SAP Support:
  
  If the issue persists after trying the above steps, consider reaching out to SAP Support for further assistance. Provide them with detailed information about the error, including the context in which it occurs.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as CN22 (for network activities) and CN41 (for project structure) to help in troubleshooting.
  Documentation: Review SAP documentation related to project management and network planning for additional insights into how relationships are managed.
  User Forums: Check SAP community forums or user groups for discussions related to the CN888 error, as other users may have encountered and resolved similar issues.
  
  By following these steps, you should be able to identify and resolve the underlying cause of the CN888 error in your SAP system.