API response codes

HTTP Code	Description	Occurs When:
200	OK	Everything performs as expected.
201	Created	A new entity has been created.
202	Accepted	The call to the method was accepted and will be handled at the server’s discretion.
204	No Content	The call to the method was successful but there is not data that this method will return.
400	Bad Request	A malformed request was sent through or when a validation rule failed. Validation messages will be returned in the response body.
401	Unauthorised	The user is not correctly authenticated and the call requires authentication. The user does not have access rights for this method.
402	Payment Requested	The registration has expired.
404	Not Found	The requested entity was not found. Entities are bound to companies. Ensure the entity belongs to the company.
405	Method Not Allowed	HTTP Verb is not specified or incorrect verb is used. Or The user does not have access to the specified method. This applies to invited users.
409	Conflict	When attempting to delete an item that is currently in use.
415	Incorrect or Missing Content-Type header	A valid Content-Type header such as application/json is required on all requests.
429	Request Limit Reached	The limit of 100 requests per minute per company is exceeded or more there are more than 20 failed login attempts.
	Request limits A limit of 100 requests can be made per minute per company. If this request limit is exceeded, the API will return HTTP 429 (Request Limit Reached) with the message “Your IP address has exceeded the allowed number of transactions per minute and has been blocked for 1 hour”. Your IP address will be blocked for 1 hour. It is advisable to make no more than one request per second to avoid this./p> Failed login attempts A limit of 20 failed login attempts can be made per hour through the API. If this request limit is exceeded, the API will return HTTP 429 (Request Limit Reached) with the message “Your Username has exceeded the allowed number of login attempts and has been blocked for 24 hours”. The Username will be blocked for 24 hours. Encountering a rate limit Accounts are temporarily blocked if a request limit is exceeded. Accounts will be blocked based on the API Key, Company Id and User. Being blocked in one company will not block you from making calls in other companies. Accounts are automatically unblocked within an hour. Do not continue to make requests as this may extended the blocking period. If you encounter a limit, do not continue to make requests as this may extend the blocking period. Queue Requests until the block is lifted.
500	Internal Server Error	A server side error occurred.
503	Service Unavailable	The service is unavailable due to scheduled maintenance.