Hey i am using a custom module for employee advance and it is working fine in single company as advance is added in payslip.line whenever i compute a payslip but now when i turn multi company on it is givng me following error

" Create/update: a mandatory field is not set. - Delete: another model requires the record being deleted. If possible, archive it instead. Model: Payslip Line (hr.payslip.line), Field: Name (name)"

Anyone of you can tell what going wrong?? Thanks in advance