Exception when running BDC

Hi Experts,

I have encountered an exception CL_HRPA_SAPUP50R_ADAPTER======CP when tried to mass upload a set of employees into ECC-SVT. I am entering mandatory fields in PA 40 when creation of these employees and transferred via BDC method.

What is this error and how do I get it resolved? Awaiting for your responses.

Thanks & Regards,

Ashwini.