It is very much possible.
Create a flat file dictionary with the following definitions.
Header
OrdHdr
OrdLin
Trailer
Choose the Delimiter Record Parser.
Create a Record reference to Header (Occurs 1) and name it HDR
Create a sub Record Reference to OrdHdr(Occurs unlimited) and name it 000
Create a sub record Reference to OrdLin(Occurs unlimited) and name it recordWithNoID
Create a Record Refernce below the HDR to Trailer (occurs 1) and name it TLR
Also in the Settings tab, set the Default Record to OrdLin refering to the above dictionary.
That should work !!!
HTH
Bhavani Shankar
#Integration-Server-and-ESB#webMethods#Flow-and-Java-services