@Stefan Schippers, @Tim Edwards , I was trying to convert my .spice file of digital code obtained after openlane run to .xspice file using below command as per previous threads: python3 spi2xspice.py.in sky130_fd_sc_hd__tt_025C_1v80.lib SRAM_Wrapper_top.spice SRAM_Wrapper_top.xspice It shows below messages:(ss attached as well) "Reading liberty netlist sky130_fd_sc_hd__tt_025C_1v80.lib Reading spice netlist SRAM_Wrapper_top.spice Writing xspice netlist SRAM_Wrapper_top.xspice Writing xspice file Cell sky130_ef_sc_hd__decap_12 does not have a type defined! Cell sky130_fd_sc_hd__fill_1 does not have a type defined! Cell sky130_fd_sc_hd__fill_2 does not have a type defined! Cell sky130_fd_sc_hd__tapvpwrvgnd_1 does not have a type defined! No output for sky130_fd_sc_hd__diode_2 Done. " Are these messages showing cells are not defined need to be added individually or add other library for this?

I think in a Spice->Xspice conversion, power taps, filler cells, decap cells and (antenna?) diodes do not have any digital counterpart, they should just be ignored / removed from the input netlist.

okay , will remove it and check

Yes, those cells have no xspice counterpart.