When an API Query call is made, a status message appears: 414 Request-URL Too Large. What does this message mean?
This message appears in the status of the user's API Call if the information being pulled from the query is too long for the URL.
If the user is using the GET operator, the user needs to switch to POST. POST can contain up to 10,000 characters as opposed to 200 from the GET operator.
Vault Developer Documentation: Maximum Query String Length