How To Fix KM312 - Error while writing actual line item &2 / &3 / &4

SAP Error Message - Details

• Message type: E = Error

• Message class: KM - Error messages for Profit Center Accounting

• Message number: 312

• Message text: Error while writing actual line item &2 / &3 / &4

What causes this issue?

An internal error occurred when the system tried to write a line item
in Table GLPCA.
Company code &V1&, document type &V2&, document number &V3&,
document item &V4&

System Response

The record could not be inserted because another record already exists
with the same key in the line item table (or a related database
index).

How to fix this error?

Find out why this data was going to be transferred to Profit Center
Accounting a second time.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message KM312 - Error while writing actual line item &2 / &3 / &4 ?

  The SAP error message KM312, which states "Error while writing actual line item &2 / &3 / &4," typically occurs in the context of the Controlling (CO) module, particularly when dealing with actual line items in cost accounting. This error can arise due to various reasons, and understanding the cause is crucial for resolving it.
  Causes of KM312 Error
  
  
  Data Consistency Issues: There may be inconsistencies in the data being processed, such as missing or incorrect entries in the relevant tables.
  
  
  Authorization Issues: The user may not have the necessary authorizations to write to the line item tables.
  
  
  Technical Issues: There could be a problem with the database, such as a lock on the table or a failure in the database connection.
  
  
  Configuration Errors: Incorrect configuration settings in the Controlling module can lead to issues when trying to post actual line items.
  
  
  Missing Master Data: Required master data (like cost centers, internal orders, etc.) may be missing or incorrectly set up.
  
  
  System Performance: If the system is under heavy load, it may not be able to process the request in a timely manner, leading to errors.
  
  
  Solutions to KM312 Error
  
  
  Check Data Consistency: Verify the data being posted for any inconsistencies. Ensure that all required fields are filled out correctly.
  
  
  Review Authorizations: Ensure that the user has the necessary authorizations to perform the action. This can be checked in the user roles and profiles.
  
  
  Database Check: Investigate the database for any locks or issues. You may need to consult with your database administrator to resolve any underlying database problems.
  
  
  Configuration Review: Review the configuration settings in the Controlling module to ensure they are set up correctly. This may involve checking settings related to cost elements, cost centers, and internal orders.
  
  
  Master Data Verification: Ensure that all required master data is available and correctly configured. This includes checking for the existence of cost centers, internal orders, and other relevant entities.
  
  
  System Performance Monitoring: Monitor system performance and check for any bottlenecks. If the system is under heavy load, consider scheduling the posting during off-peak hours.
  
  
  Check Logs: Review the application logs (transaction SLG1) for more detailed error messages that can provide additional context for the issue.
  
  
  Consult SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  
  
  Related Information
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as KSB1 (Display Actual Line Items) and KOB1 (Display Actual Line Items for Orders) to analyze the data being processed.
  SAP Community: Engage with the SAP Community forums for insights from other users who may have encountered similar issues.
  SAP Support: If the issue persists, consider reaching out to SAP Support for assistance, providing them with detailed information about the error and the context in which it occurred.
  
  By following these steps, you should be able to identify the cause of the KM312 error and implement a suitable solution.