Reference Bad Links Report


If this report did not generate your information, search for your organization via the “Organization” search at the top of the report. If you’re a third party publisher, use your organizations’ Name to view all data you’ve published for credential and other organizations.

IMPORTANT: With the exception of duplicates or data that is incorrect, all data published to the Credential Registry is meant to be permanent. Once the lifecycle of a credential, organization, or other resources in the Registry ends, the lifecycle status needs to be updated to reflect an organization closing or a resource, such as a credential, no longer being offered

Header Row Description
Publisher The organization that published the data resources to the Credential Registry. This links to the related detail page in the Credential Finder.
Owner The organization that owns the resources published to the Credential Registry. This links to the related detail page in the Credential Finder.
Resource Type The type of resource data published to the Credential Registry. For example, Credential, Assessment, Learning Opportunity, etc.
Name The name of the data resource with a broken webpage link in the Credential Registry. This links to the related detail page in the Credential Finder.
CTID The unique identifier for the resource published to the Credential Registry. Learn more about the CTID.
Last Updated Date that the resource was last updated in the Credential Registry.
Publisher Link This is the editable detail page in the Credential Registry Publishing System for the resource. Accessing this page requires logging in.
Registry Link A link to view the raw registry data for the resource. .
Property The CTDL-related location where a webpage link is broken in the Registry data.
Status Code Definition
NameResolutionFailure 0 Name resolution is the process of converting a host name to an IP address, so a Name Resolution Failure occurs when the Domain Name System (DNS) used by your computer can’t convert the URL (example:http://example.org ) into the relevant IP address. A very common cause of this Name Resolution Failure is that there is no internet connection to the target computer.
ReceiveFailure 0 The target site takes too long to respond.
SecureChannelFailure 0 The request was aborted: Could not create SSL/TLS secure channel. The site uses an unsupported protocol.
SendFailure 0 This API supports the product infrastructure and is not intended to be used directly from your code. A complete request could not be sent to the remote server.
ServerProtocolViolation 0 This API supports the product infrastructure and is not intended to be used directly from your code. The server response was not a valid HTTP response.
TrustFailure 0 This API supports the product infrastructure and is not intended to be used directly from your code. A server certificate could not be validated.
Timeout 0 Timeout error, means that the server is not receiving a response from the backend servers within the allowed time period.
MovedPermanently 301 The requested resource has been assigned a new permanent URI and any future references to this resource should use one of the returned URIs. The site would have redirects. This means the published URLs are incorrect but they resolve.
ProtocolError 302 The requested resource resides temporarily under a different URI. Since the redirection might be altered on occasion, the client SHOULD continue to use the Request-URI for future requests.
ProtocolError 400 The 400 status code, or Bad Request error, means the HTTP request that was sent to the server has invalid syntax.
Unauthorized 401 The 401 status code, or an Unauthorized error, means that the user trying to access the resource has not been authenticated or has not been authenticated correctly. This means that the user must provide credentials to be able to view the protected resource. An example scenario where a 401 Unauthorized error would be returned is if a user tries to access a resource that is protected by HTTP authentication, as in this Nginx tutorial. In this case, the user will receive a 401 response code until they provide a valid username and password (one that exists in the .htpasswd file) to the web server.
ProtocolError 403 The 403 status code, or a Forbidden error, means that the user made a valid request but the server is refusing to serve the request, due to a lack of permission to access the requested resource. If you are encountering a 403 error unexpectedly, there are a few typical causes that are explained here.
ProtocolError / ConnectionClosed / Url does a redirect on page not found. 404 The 404 status code, or a Not Found error, means that the user is able to communicate with the server but it is unable to locate the requested file or resource. While 404 errors can occur in a large variety of situations, typically it means the page has been renamed/removed.
ProtocolError 500 The 500 status code, or Internal Server Error, means that the server cannot process the request for an unknown reason. Sometimes this code will appear when more specific 5xx errors are more appropriate. The most common cause for this error is server misconfiguration (e.g. a malformed .htaccess file) or missing packages (e.g. trying to execute a PHP file without PHP installed properly).
ProtocolError 501 The server does not support the functionality required to fulfill the request. This is the appropriate response when the server does not recognize the request method and is not capable of supporting it for any resource.
ProtocolError 502 The 502 status code, or Bad Gateway error, means that the server is a gateway or proxy server, and it is not receiving a valid response from the backend servers that should actually fulfill the request. If the server in question is a reverse proxy server, such as a load balancer, here are a few things to check: -
  • The backend servers (where the HTTP requests are being forwarded to) are healthy
  • The reverse proxy is configured properly, with the proper backends specified
  • The network connection between the backend servers and reverse proxy server is healthy. If the servers can communicate on other ports, make sure that the firewall is allowing the traffic between them
  • If your web application is configured to listen on a socket, ensure that the socket exists in the correct location and that it has the proper permissions.
Service Unavailable 503 The 503 status code, or Service Unavailable error, means that the server is overloaded or under maintenance. This error implies that the service should become available at some point. If the server is not under maintenance, this can indicate that the server does not have enough CPU or memory resources to handle all of the incoming requests, or that the web server needs to be configured to allow more users, threads, or processes.
Gateway Timeout 504 The 504 status code, or Gateway Timeout error, means that the server is a gateway or proxy server, and it is not receiving a response from the backend servers within the allowed time period. This typically occurs in the following situations:
  • The network connection between the servers is poor
  • The backend server that is fulfilling the request is too slow, due to poor performance
  • The gateway or proxy server’s timeout duration is too short
Unsecured Link 0 URL should be https not http
Url redirects to another page 0 The published URL is redirecting to a new page, The resource should be republished with currenct URL.
Follow Us:
Contact Us:
Information:
Policies and Terms of Use:
Websites: