FBA is Fixed-Block Address or Fixed-Block Architecture (FBA). FBA is a DASD data storage architecture in which the data is stored in fixed-length blocks. Each block is addressed by a block number relative to the beginning of the particular disk.
FBA - is a print file format normally 133 bytes in length with 132 printable characters where the first character is a carriage control. When in Browse mode on a file with this format the first column is not shown. The only way to see the first column is if you go into EDIT. The valid carriage control characters are -
To my knowledge FBA is Fixed Block Attribute. Whenever you use After Advancing in the cobol program for reports the mode should be FBA. If it is wrong please let me know.