How To Fix TQ405 - Reading the cofile: rc=&

TQ405 - Overview

• Message type: E = Error

• Message class: TQ - SAPup Messages

• Message number: 405

• Message text: Reading the cofile: rc=&

What causes this issue?

The sytem attempted to read the contents of the transport information
file (cofile) of a request. The return code for this action is given in
this message.

System Response

The system's reaction depends on the value of the return code. In
certain circumstances the system will cancel other actions.

How to fix this error?

If this is the case, check the other log messages before this line, and
try and remove the problem.
The exact meaning of the individual values of the return code cannot be
explained here. They are program-internal. Their logs are intended as a
help tool for specialists. Generally, however, it is useful to analyze
the log lines before this one, to try and determine the cause of the
problem.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message TQ405 - Reading the cofile: rc=& ?

  The SAP error message TQ405, which states "Reading the cofile: rc=&", typically indicates an issue with the transport management system (TMS) in SAP. This error occurs when the system is unable to read the transport cofile, which is a crucial component in the transport process. The cofile contains metadata about the transport request, and if it cannot be read, it can lead to issues in transporting objects between systems.
  Causes:
  
  File System Issues: The cofile may be missing, corrupted, or inaccessible due to file system issues.
  Transport Directory Problems: The transport directory may not be correctly configured, or the transport files may not be in the expected location.
  Authorization Issues: The user or the system may not have the necessary permissions to access the transport files.
  Transport Request Issues: The transport request itself may be incomplete or improperly configured.
  Network Issues: If the transport is being done across systems, network issues may prevent access to the