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Tiva TM4C123GH6pmi JTAG cannot connect to custom target board of Tiva TM4C1237e6pz

Other Parts Discussed in Thread: TM4C1237E6PZ, EK-TM4C123GXL

Hello TIVA, 

We connected a ek-TM4C123G  board as a JTAG debugger to our custom board.

We removed the jumper adjacent to R17 so that this bypasses the ek - TM4C123G  board microcontroller.

We wired the TCK,TMS,TDO,TDI lines to our JTAG interface of our custom board (TM4C1237e6pz).

When we try to debug the custom board using code composer, the code composer gives an Error "cannot initialize Target".