The following are the examples of HTTP status codes including errors that API can generate

Response codes	Response content	Description
200 OK	{ "RowsDeleted": 0 }	Everything worked correctly.
400 Bad Request	Incorrect value '2016-10-04 00:00:00' for field 'Start Date'. User the date format: 'yyyy-MM-dd HH:mm:ss.S'	Specific case if you specify incorrect date format.
400 Bad Request	Incorrect value 'example_text_value' of field 'Num of Days'	The passed values don’t match the field types specified in the custom dataset.
400 Bad Request	You need to set all field values in when deleting a row	You forgot to pass at least one field with its value in the request body.
403 Forbidden	Access denied	Access to the dataset is denied.
404 Not Found	Object not found	Dataset not found.

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Note
Make sure that the values you are passing match the field types defined for your dataset schema. The number of fields you are passing should also completely match the number of fields in your dataset schema.
If the request you pass does not match any of the records, the system will still return response code 200 (Success).