Some struct x1f4_a1record_type
record must be declared.
struct x1f4_a1record_type a1record;
The error collector must be linked into the parsing context.
struct x1f4_a1_type attributes; a1.bcollect_set.eerecord_data = &a1record;
Finally, the program parser must be indicated that it should record errors.
status = x1f4_init_shuffle(..., ..., X1f4_A1_BCOLLECT | ..., ...);