How To Fix BCOMEC055 - Line &1 is busy

SAP Error Message - Details

• Message type: E = Error

• Message class: BCOMEC - Business Communication: Messages of external components

• Message number: 055

• Message text: Line &1 is busy

What causes this issue?

The extension &V1& is currently busy, therefore calls cannot be
initiated nor other calls transferred to this extension.
More information about the external software component:
&V3&

System Response

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

How to fix this error?

Procedure for System Administrators

The error can occur in 2 different places:
1. In the connected gateway
2. In the underlying CTI software
In this case, the error occurred in (&V4&).
The return code for the underlying CTI software is: &V2&

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message BCOMEC055 - Line &1 is busy ?

  The SAP error message BCOMEC055, which states "Line &1 is busy," typically occurs in the context of communication or data transfer processes, particularly when dealing with external systems or interfaces. This error indicates that the specified line (or communication channel) is currently in use and cannot process the new request.
  Cause:
  
  Concurrent Usage: The line or communication channel is already being used by another process or transaction, leading to a conflict.
  Locking Mechanism: SAP may have a locking mechanism in place that prevents multiple processes from accessing the same line simultaneously.
  Configuration Issues: There may be configuration settings that limit the number of concurrent connections or processes that can use the line.
  Network Issues: Temporary network issues or delays can also cause the line to appear busy.
  
  Solution:
  
  Wait and Retry: If the line is busy due to another process, waiting for a short period and then retrying the operation may resolve the issue.
  Check Active Processes: Use transaction codes like SM50 or SM66 to check for active processes that may be using the line. If you identify a process that can be safely terminated, you can do so.
  Review Configuration: Check the configuration settings for the communication line to ensure that it allows for the required number of concurrent connections. This may involve adjusting parameters in the relevant configuration settings.
  Error Logs: Review the application logs (transaction SLG1) for any additional error messages or warnings that may provide more context about the issue.
  Contact Support: If the issue persists, consider reaching out to your SAP support team or consulting SAP Notes for any known issues or patches related to this error.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with transaction codes like SM50 (Process Overview), SM66 (Global Process Overview), and SLG1 (Application Log) to monitor and troubleshoot processes.
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may address this specific error or provide additional troubleshooting steps.
  Documentation: Review SAP documentation related to the specific module or functionality you are working with, as there may be specific guidelines or best practices for handling communication lines.
  
  By following these steps, you should be able to diagnose and resolve the BCOMEC055 error effectively.