Decision Optimization

Originally posted by: K N Reddy

Hi, I am solving a problem using benders decomposition. when solving, after some iterations the system showing " ERROR: CPLEX Error 22: Unknown error code". May I know what is this error and how to fix it?

Thanks in advance.

This is not expected. Do you have a way to reliably reproduce this problem? If so, can you post that here?

Originally posted by: K N Reddy

Thanks. But, Initially, when I solved the problem with small size, the code working finely but when problem size increased the error is showing. Can you please suggest me how to fix it?

Originally posted by: K N Reddy

Originally posted by: EdKlotz

22 is not an error code from CPLEX, and the output in the image you uploaded indicates that the error message is not from CPLEX itself but from the program that calls CPLEX.   22 is a solution status.   Either upload a sample that reproduces the problem as Dominico suggested, or at least provide more information about how you are calling CPLEX, including the API you are using and the code segment that prints out the error message.   And when you say you are solving a problem using Benders' decomposition, are you using the automated Benders feature in CPLEX or implementing your own version of Benders?

Originally posted by: dominiqs81

Can you share the model and instructions on how to reproduce?