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I am trying to run the uvm builtin register sequences. I seem to have broken our usage of them in porting code from a previous project. Q1: In the past, we've started them as default sequences. Is there any way to have an error/warning appear if a 'set', such as the below, is never utilized (or 'get'-ed)? uvm_config_db#(uvm_object_wrapper)::set(this, "*.m_reg_agent.m_seq_reg.main_phase", "default_sequence", uvm_builtin_reg_test_seq::type_id::get()); I've added uvm_top.print_topology(); and uvm_config_db::dump(); and it seems the ::set should be working, but nothing is starting. Q2: Are builtin (base class) sequences automatically "::created" somehow/somewhere? (Creation/new-ing is still necessary when you setup a default sequence, right? Or is there some magic singleton-ness that happens?) Q3: My error of the moment is as follows. Your thoughts are appreciated. UVM_FATAL @ 39990: reporter@@seq [SEQ] neither the item's sequencer nor dedicated sequencer has been supplied to start item in seq always@(posedge clk), ljepson74