Integration and Testing

Authorize.Net API questions and help with your payment integration.

Posts: 10
Registered: ‎11-25-2014

Direct Post method and x_fp_sequence

I am lloking through the specifications for the Direct Post method and regarding the x_fp_sequence field, all I see is that it is numeric. Can anyone tell me what the maximum value for that field is?


Administrator Administrator
Posts: 563
Registered: ‎08-03-2011

Re: Direct Post method and x_fp_sequence


Hi TonyS,


The sequence number will function up to at least 100 characters, but given that it is only used for the creation of the fingerprint there is no reason to use something that large.