Description Mandatory parameter used for creating a recurring payment that allows to define the recurring payment start date.

This parameter does not always match with the date of the first installment that depends only on the vads_sub_desc parameter.

The effective date indicates when the recurring payment starts. The format of this date is YYYYMMDD.

Example: for 1 February 2015, enter 20150201.

Input and output field, returned in the response (IPN and Return URL).

Format n8
Error code 69
Category Recurring payment details.