Luu,
Please elaborate more your flatfile sample and the given information is not sufficient.
Please look in the ISFlatFileSchemaUserguide.pdf for creating schema.
Basically if the flatfile has RecordDefinition(ROCDetails)you have to set this mapRepeat(unlimited)when you define the RecordDefinition,and create field definitions in the FlatFileDefinition panel of the FlatFileEditior in the WM Developer.
HTH,
RMG
#Integration-Server-and-ESB#Flow-and-Java-services#webMethods