I needed a quick reference for EDI Data Types, so here it is.
AN Alpha Numeric String
B Binary Number
DT Date (YYMMDD or YYYYMMDD)
FS Fixed-Length String
ID Identifier, from a pre-defined list of applicable code values
Nn Numeric, with (n) implied decimal places
R Decimal Number (Real Number)
TM Time (HHMMSS), 24-hour clock