A connection that uses such as REST API or Web Service API may display the HTTP error code. 
The error code is returned from the connection destination as an HTTP response against a request from the DataSpider side. Therefore, it may be possible to isolate the cause from the error code by checking whether it is a connection destination problem or a client setting problem.
In this document, we will introduce two typical error codes among the HTTP error codes that are frequently inquired to the DataSpider.

■500 Internal Server Error
[Probable Cause]
　An error code is logged when something goes wrong on a server side that handles client requests.

[Workaround]
　In case of the connection between DataSpider and an external service, the DataSpider is considered as a client so if this error occurs, please checks the connection destination server of the DataSpider to see if there is a problem.

■401 Unauthorized
[Probable Cause]
　The 401 error is generally a client request error code that is recorded when authentication fails from a client to a server.

[Workaround]
　If you are using DataSpider, please make sure that the authentication information set in the logic icon or the authentication information is correct in the global resource settings.

• [Help]-[Adapter]-[Network]-[REST]

*Please refer to the certification guide in the execution operation.

GET execution
URL：https://www.hulft.com/help/en-us/DataSpider/dss42sp2/help/en/adapter/network/rest_execute_http_get.html
POST execution
URL：https://www.hulft.com/help/en-us/DataSpider/dss42sp2/help/en/adapter/network/rest_execute_http_post.html
PUT execution
URL：https://www.hulft.com/help/en-us/DataSpider/dss42sp2/help/en/adapter/network/rest_execute_http_put.html
DELETE execution
URL：https://www.hulft.com/help/en-us/DataSpider/dss42sp2/help/en/adapter/network/rest_execute_http_delete.html

• [Help] - [Adapter] - [kintone] - [Global Resource Properties]

https://www.hulft.com/help/en-us/DataSpider/dss42sp2/help/en/adapter/cloud/kintone_resource.html