By default it is defined to store macros at WORK.SASMACR. However at my site location for macros storage is different and I do not know where it is. Can I find the default macros catalog and view what is inside?
Please see below effects of system options SASMSTORE + MSTORED and STORE option in macro definition on location of the compiled macros - could be something similar was used on your site.
option sasmstore=sasuser mstored;
%macro _mstore /store;
%put This is macro with mstore;
%mend;
%macro _nomstore;
%put This is macro without mstore;
%mend;
proc options option=sasmstore;
run;
Use DICTIONARY.CATALOGS to list macros compiled in your session.
proc sql;
create table macros as
select * from dictionary.catalogs where objtype='MACRO';
quit;