Failed to send data via HTTPS: Repsone code 500 ESIPRT.000020.000019


We are having problems sending/ receiving Pips to our Partner, we get the following error message all the times!. have any one seen this before?,

““In service wm.ip.trp:http: Retry 1 of 4: Failed to send data using protocol https. The response code is 500. The status message is Internal System Error [ESIPRT.000020.000019]””

Please help.