Suddenly started to get 400 bad request

[EvgeniyG]

We have a job that uses servicenow REST API to query for events every three minutes. It works fine, until yesterday, when suddenly we started to get 400 Bad Request.

I can't reproduce the issue from the development env POSTMAN, same URL works. What can it be? 
Regards,

Evgeniy

[EvgeniyG]

Adding here a root cause , in case anyone would meet same problem:

{
    "error": {
        "message": "Pagination not supported",
        "detail": "The requested query is too long to build the response pagination header URLs. Please do one of the following: shorten the sysparm_query, or query without pagination by setting the parameter 'sysparm_suppress_pagination_header' to true, or set 'sysparm_limit' with a value larger then 233 to bypass the need for pagination."
    },
    "status": "failure"
} 

Our query was too long.

[EvgeniyG]

Adding here the root cause: our query was too long, this the message body:

{
"error": {
"message": "Pagination not supported",
"detail": "The requested query is too long to build the response pagination header URLs. Please do one of the following: shorten the sysparm_query, or query without pagination by setting the parameter 'sysparm_suppress_pagination_header' to true, or set 'sysparm_limit' with a value larger then 233 to bypass the need for pagination."
},
"status": "failure"
}