Error while using SAP_XI_IDOC/IDOCFlatToXmlConvertor

Hi Team,

I developed an Adapter Module which fills some mandatory fields of IDOC and after that it needs to be converted from flat file structure to IDOC xml structure. The custome Adapter module which is adding mandatory filelds to the IDOC is working alone but when I am adding SAP_XI_IDOC/IDOCFlatToXmlConvertor bean after the custom Adapter Module, I am getting the following error in Communication Channel:

Could you please suggest me any workaround.

Thanks in Advance,

Ramanji Killani.