Problem
When processing a card, the user receives the following decline: “Please ensure you have exactly one ‘”
Solution
The decline message is actually a truncated version of “Please ensure you have exactly one ‘~’ between each of the name and value pairs in the parameter string.” A possible problem that can be causing this is if the user has special characters in the AVS fields. For example: “New York |”. This can be solved by removing the special character from the field.