ARB Trial period with Paypal

我们使用a1、p1、t1这三参数定义Paypal ARB Integration的试用期限。这三个参数的值根据不同的情况有不同的限制,如果参数定义错误,则会出现如下信息:

Invalid first trial period. You must specify valid values for the A1, P1, and T1 parameters for a subscription.

a1、p1、t1的参数定义:

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a1: Trial period 1 price. For a free trial period, specify 0.
 
p1: Trial period 1 duration. Required if you specify a1. Specify an integer
       value in the allowable range for the units of duration that you specify
       with t1. 
       Character Lenght:2
 
t1: Trial period 1 units of duration. Required if you specify a1. 
       Allowable values:
        * D – for days; allowable range for p1 is 1 to 90
        * W – for weeks; allowable range for p1 is 1 to 52
        * M – for months; allowable range for p1 is 1 to 24
        * Y – for years; allowable range for p1 is 1 to 5
      Character Lenght:1

a1表示ARB试用期的费用,如果是0则表示免费;
p1表示ARB试用期的期限,其值必须是整数类型且数值的范围由t1决定;
t1表示用于决定p1值的范围,t1的值有天、周、月、年四种。t1值不同则其相应的p1值范围也不同,如天的范围是1~90等。

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