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