Can we upload historical data (assignment+salaries) in bulk if we already have payroll live with cur

Hi!

Standard APIs allows to upload assignment historical data but when we include salary basis for this upload we face following error.

"You cannot update this assignment as a pay proposal exists for it with a change date after its effective start date".

Application UI allow to correct salary basis information on historical assignment data but when we add salary for that we again face error.

"You cannot create the salary proposal before the initial salary"

Can we upload historical data (assignment+salaries) in bulk if we already have payroll live with current assignment???

br

Azfar.