How To Fix W_002 - Internal error in connection with application log

SAP Error Message - Details

• Message type: E = Error

• Message class: W_ - Upload CRM -> R3 BOMs / Structured Materials

• Message number: 002

• Message text: Internal error in connection with application log

What causes this issue?

An internal error occurred during the attempt to intialize, save or
read the application log.

System Response

Processing cannot be carried out and no messages can be displayed.

How to fix this error?

Inform you system administrator. The error occurred in module &V1& and
the return value was &V2&.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message W_002 - Internal error in connection with application log ?

  SAP Error Message:
  
  W_002 Internal error in connection with application log
  
  Cause:
  The error message W_002 typically indicates an internal problem related to the application log functionality in SAP. This can happen due to:
  
  Corruption or inconsistency in the application log tables (e.g., BALHDR, BALDAT, BALDAT_H).
  Issues with the application log object or subobject configuration.
  Problems in the connection or interface between the application and the logging framework.
  Missing or incorrect entries in the application log customizing.
  Buffer inconsistencies or authorization issues when accessing the application log.
  
  
  Explanation:
  SAP application logs are used to record messages, warnings, and errors during processing. The system uses specific tables and objects to manage these logs. If the system encounters an unexpected condition while writing or reading from these logs, it raises an internal error like W_002.
  
  Solution / Troubleshooting Steps:
  
  
  Check Application Log Configuration:
  
  Use transaction SLG0 to verify the application log object and subobject configuration.
  Ensure that the log object and subobject used by the application are correctly defined.
  
  
  
  Check Application Log Tables:
  
  Verify the consistency of application log tables:
  
  BALHDR (log header)
  BALDAT (log data)
  BALDAT_H (log data history)
  
  
  Run database consistency checks or use transaction SE14 to check and activate these tables.
  
  
  
  Clear or Archive Old Logs:
  
  If the application log tables are very large or corrupted, consider archiving or deleting old logs using transaction SLG2.
  After cleanup, test if the error persists.
  
  
  
  Check Authorizations:
  
  Ensure the user has the necessary authorizations to write/read application logs.
  Check authorization objects like S_LOG.
  
  
  
  Check for OSS Notes:
  
  Search SAP Support Portal for OSS Notes related to message W_002 or application log errors.
  Apply any relevant patches or corrections.
  
  
  
  Debugging:
  
  If you have development access, debug the program or function module that triggers the error to identify the exact cause.
  Look for issues in the calls to function modules like BAL_LOG_CREATE, BAL_LOG_MSG_ADD, or BAL_DB_SAVE.
  
  
  
  SAP Basis Checks:
  
  Check system logs (SM21) and short dumps (ST22) for related errors.
  Verify system health and database consistency.
  
  
  
  
  Related Information:
  
  
  Transactions:
  
  SLG0 – Application Log Object Maintenance
  SLG1 – Application Log Display
  SLG2 – Application Log Deletion
  SE14 – Database Utility (for table checks)
  SM21 – System Log
  ST22 – ABAP Runtime Errors
  
  
  
  Tables:
  
  BALHDR – Application Log Header
  BALDAT – Application Log Data
  BALDAT_H – Application Log Data History
  
  
  
  Function Modules:
  
  BAL_LOG_CREATE – Create Application Log
  BAL_LOG_MSG_ADD – Add Message to Log
  BAL_DB_SAVE – Save Log to Database
  
  
  
  
  Summary:
  The W_002 Internal error in connection with application log is caused by inconsistencies or configuration issues in the SAP application log infrastructure. The solution involves checking and correcting the application log setup, ensuring database table consistency, cleaning up old logs, verifying authorizations, and applying relevant SAP Notes.
  If the problem persists after these steps, consider raising a support ticket with SAP, providing detailed logs and system information.