Get future dated accrual plan balance in Global Absence Entry Validation formulas

Summary:

We have an accrual plan which is not based on/ linked to any absence type, but gets deducted when employee asks for it in a DFF field. So we need to check the validation in the Entry Validation formula.

For that we need to get the balance of the plan as of future date.

We have tried to achieve this by GET_PLAN_BALANCE(), but it give the balance as of last accrual date.

We also tried GET_ACCRUAL_BALANCE() but it gives error as in CHANGE_CONTEXT we cannot use ACCRUAL_PLAN_ID as a context which is mandatory for GET_ACCRUAL_BALANCE().