V90 - disturbance in homing position on Power on and off the system or after restarting the system

I am facing following problem in siemens v90 drive positioning control:

i am using motor: SIMOTICS S-1FL6042-1AF61-0LA1

Encoder: ABS.MT.20-bit

1. Currently i am using SINAPOS block for position control and homing teaching is done by drive keypad.

2. i am using profinet telegram 111 for communication with my 1217 PLC.

3. The problem I am facing right now is the disturbance in homing position on Power on and off the system or after restarting the system.

4. It takes any random negative value as its actual position.

------------------------------------------------------------------------------------------
Split from Not possible to set HOME ZERO in V90 dive with absolute encoder .

Have you testend to use p2507.

A simple Position Setting  is Not sufficient for absolute  encoders with Basic positioner (EPos).