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INA2180-Q1: accuracy impaction by Zener diode&R

Part Number: INA2180-Q1
Other Parts Discussed in Thread: INA2180, STRIKE, OPA2192-Q1, OPA2192, INA2290, INA2191

Dear expert,

Customer is using INA2180A3-Q1 for high side current measurement. Vbat is 9V~16V.  Current is from 1A~30A. Current sensor resistor is 3mohm. Battery voltage is 9-16V.  ADC is 0~5V range. 

For "load dump" test, Vbat can reach 36V max. To protect INA2180. Customer add 1K resistor + Zener diode(BZX84_B24) to GND before INA+/-. (They cannot add TVS at Vbat directly due to other concern.)

Do these 1K resistor + Zener diode(BZX84_B24) impact INA2180A3-Q1 accuracy? And how to calculate?