Hi...Problem in SXMB_MONI

Hi..

i have worked on the <b>idoc to file</b> real time scenario. when i check the t.code <b>sxmb_moni</b> in XI server i have seen the message an <b>acknowledgment not possible</b>. i can't understand this error and i don't know where i made mistake.

i have choosen the idoc as <b>DELINS.DELFOR02</b>.

kindly tell me what i need to do.

Regards,

Selva.