I am re-posting this topic here under the advise of the community support technicians.
The accuracy we are getting from the RTK is under 20mm, even so, when calibrating the images in Pix4Dmapper using Accurate Geolocation and Orientation method, we are still seeing a slightly shift of about 1m.
We used a Trimble R10 ground station to record some GCPs and to check the Outputs accuracy against them.
Unless we tie up the data to the GCPs coordinates, the 20mm accuracy from the RTK looks useless.
We flown the area using DJI Matrice m210 RTK v2 fitted with DJI Zenmuse X7 Camera.
Thank you muchly!!