Why does a 403 error suddenly occurs?

Question

I'm using Spring Social to get some informations via the LinkedIn API. Everything works fine : I can connect to my application using LinkedIn, I can recover some granted informations about my connections... However, sometimes, I can't access anymore to LinkedIn and get this error :

16:28:00,741 WARN  [RestTemplate] GET request for "https://api.linkedin.com/v1/people/id=FNXqbb779g:(id,first-name,last-name,headline,location,industry,distance,relation-to-viewer,current-share,num-connections,num-connections-capped,summary,specialties,proposal-comments,associations,honors,interests,positions,publications,patents,languages,skills,certifications,educations,three-current-positions,three-past-positions,num-recommenders,recommendations-received,phone-numbers,im-accounts,twitter-accounts,date-of-birth,main-address,member-url-resources,picture-url,site-standard-profile-request:(url),api-public-profile-request:(url),site-public-profile-request:(url),api-standard-profile-request,public-profile-url)?format=json" resulted in 403 (Forbidden); invoking error handler

According to the error message, I'm not authorized to get the required informations (despite the fact that one minute before, I could access them).

Any ideas why ?

Answer 1

It seems that either your session token is getting expired or you're probably running into throttle limits. A session token is valid for some duration, you may need to check logs and see whether you are getting something like

"Your session has expired and the post data is lost. Please re-authenticate and re-post the data"

Also check about throttle limits here: https://developer-programs.linkedin.com/documents/throttle-limits