I checked the cause of the error encountered in the application when parsing, and checked the currently processing Pottery Barn extraction in the server, as per checking, there are two IPs executing the same application, I checked with sir Roland if the process is stopped on his side, as per sir Roland, it is stopped, but there is still another IP executing the application, checked this with Ms. Keith, she stopped the processed and when checked the server, no IP executing the application now. Executed the application on my side and parsed the given DAT file, monitored the parsing of the file and after a while, the process was done and it is successful. Advised sir Roland on the checking and the result, advised as well that the cause of the error is that there are two PC executing the same application, and it is inserting to the same tables and using the same queries thus returning an error.