Hey, guys,
I did the initial processing with Pix4dmapper.
It is normal at that point.
Then I set up GCPs.
When reoptimization is performed,
The map was tilted almost 90 degrees at right angles.
What is the cause?
Are you sure you have imported the x, y, z axes right? 
Can you share the report?
High, JOAN,
I imported it exactly.
However, no matter how many times I tried, the result did not change.
Share the report.
1_report.pdf (751.5 KB)
Can you try to apply this template and share the results? P4RTK.zip (1.8 KB).
Thank you for your reply.
I gave up and decided to solve it with Pix4dmapper.
I decided to edit the point cloud data on the point cloud processing software.
I’m sorry.
We thank you for your cooperation.