Integration of Talend with OBRM

We have integrated Talend ESB with Oracle BRM. In Talend ESB, we have designed a job which is using an input flist coming in the form of byte through CURL POST from BRM and we have included pcm.jar in  subsequent routines. It works fine until a custom field is present in the input flist. It throws the following error:-

Exception in component tJavaRow_1

ERR_BAD_FIELD_NAME

FList.java:0: ErrBuf Fields:

Error=ERR_BAD_FIELD_NAME    Loc=PCM

Field=UnknownField0    Rec=0    reserved=0

Facility=0    MessageID=0    Time=7:16 PM    Version=0    Reserved2=0

Args=<none>

Nested Error:

<none>

  at com.portal.pcm.FList.createFromString(Unknown Source)