The "old" format of IDR data is known in the program management binder as "IDRL" data, because it is typically placed either by default or explicitly into the B_IDRL class.
Translator DS CL10 Translator identification ("PID Number")
Version DS CL2 Version Level (01 to 99)
Release DS CL2 Release Level (01 to 99)
Trans_Date DS CL5 Translation date in Julian format (YYDDD)
If the length of the Translator Identifier is less than 10 characters, it must be padded on the right with blanks.
if ( YY > 65 )
then Year = 1900+YY
else Year = 2000+YY