Hi,

What product and version are you using?

This does not appear to be an error that is generated from the COBOL run-time system.
This is more likely an error that is being generated by your application code.
What is the application doing when it gets this error? On what statement does the error occur?

Thanks Chris. 

You are right, we found a bug in the c program that handles tcp/ip socket communication where COBOL calls it to listen to requests from external applications.

Thanks again.