declaration:
#ident "@(#)DF16270-1,Titia Cool,1998-02-12,tfB40_c4"
#ident "@(#)DF3784-1, Matthew Clous, 1998-06-17, B40_c4"
#ident "@(#)DF18984-1, Anjana Viswanath, 1998-06-29, tfB40_c4"
#ident "@(#)euro, Oscar Geerts, 1998-06-16, B40_c4_eur0"
#ident "@(#)DF76921-1, P.Yashaskar Reddy, 1999-02-23, tfB40_c5"
#ident "@(#)DF79344-1, Lukas Aikema, 1999-05-20, tfB40_c5"
#ident "@(#)DF32741-1, Sadanand Pandhare, 1999-06-28, B40_c5"
#ident "@(#)DF82433-1, Bram Drop, 1999-07-01, B40_c5"
#ident "@(#)DF94130-1, Preeti Raja, 2000-03-27, B40_c5"
#ident "@(#) SOL 103539, 2000-07-12, B40_c5"
#ident "@(#) SOL 112896, 2001-03-26, B40_c5"
#ident "@(#) SOL 117563, 2001-08-29, B40_c5"
#ident "@(#) SOL 118868, 2001-10-15, B40_c5"
#ident "@(#) SOL 123610, 2002-04-11, B40_c5"
#ident "@(#) SOL 125087, 2002-05-22, B40_c5"
#ident "@(#) SOL 124979, 2002-05-31, B40_c5"

DF stands for 'defects' and SOL stands fr 'solution'. They are the internal Baan id's for solved defects for this particular object.

and the VRC is the VRC for which the defect is solved; about the #ident itself, it is one of the statements for the preprocessor (see this Tools help page:

Select Help function when in the Tools menu
Baan Tools Main Index > Technical Information > Executables > (Relations) > Development > Compiler > Preprocessor

HELP VIEWER: Preprocessor (ttprog0025sf0080) * Object Identifications

To set an identification in the object use the following statement:
#ident "@(#)Identification of object"
Example:
#ident "@(#)<progname>, YY/MM/DD [HH/MM], version,
author"

Always a default identification is placed in the object by the compiler
with the following contents:
#ident "@(#)<source name>, YY/MM/DD, [HH/MM],
From ${logname}"
Using the command 'what' writes all object lines beginning with
'@(#)' on standard output.

Besides this default identification the programmer can use his own
identification which is also placed in the object.