I tried to add project many2one field in hr.recruitment.report. But it shows below error---

ProgrammingError: column hr_recruitment_report.x_project does not exist LINE 1: ...AS id, count(hr_recruitment_report.id) AS __count,"hr_recruitment_report

I tried to add same field in the table with different field name, but it also shows the same error.

How can i solve this?

Is it not possible add a many2one field in hr.recruitment.report!?