Altera Mentor Verification IP Altera Edition AMBA AXI3/4TM - Manual (Page 264)

Mentor VIP AE AXI3/4 User Guide, V10.2b 246
VHDL AXI3 and AXI4 Master BFMs
set_id()
September 2013
AXI4 Example
-- Create a read transaction with start address of 1.
-- Creation returns tr_id to identify the transaction.
create_read_transaction(1, tr_id, bfm_index, axi4_tr_if_0(bfm_index));
-- Set the id field to 2 for the tr_id transaction.
set_id(2, tr_id, bfm_index, axi4_tr_if_0(bfm_index));