Rail Pressure Sensor Replacement - P0093

I have an error code on my 08 Astra H 1.7 cdti ecoflex of P0093. The symptoms of the error code match my experience that the car is hunting and keeps on stalling when stationery, and EML light comes on when accelerating hard.

Conclusion I need to replace the Rail pressure sensor - is this a simple task?

I have found reference to a need to program volatile memory following changing the sensor and programming with a Tech 2

Any help gratefully received.