What you can do is create schema with RecordDefinition (recordWithNoID)and set properties maxrepeat(unlimited) and define field definition with record delimiter is ;.once you convertToString then tokenize(with delimiter ;)and use makeString to whole one line with delim ;
Thanks RMG…
Flat file layout has 150 fields. For first 140 fields I planned to use flat file schema. For remaining fields I will use “makeString” service with ‘;’ as delimiter. Finally I will append these two strings to get final output.