What could be preventing the PLC2-M7019 equipment from returning to its origin machine code after completing a post-stage?

What error codes are being encountered during the equipment return process?

What steps can be taken to troubleshoot and resolve the equipment return error issues?
The solution to the error "Post-stage PLC2-M7019-the equipment has not returned to the origin, please perform the equipment return to the origin first" involves performing an equipment return to the origin first. This ensures