TFS4JIRA Synchronizer configuration: Protocal Error

We are setting up TFS4JIRA Synchronizer for the first time. We have been able to successfully test the connection between TFS4JIRA and JIRA. It appears that TFS4JIRA and JIRA are able to talk to each other becase we see the list of our JIRA projects in the TFS4JIRA Synchronizer configuration. However, when we get to the next screen where it's supposed to be showing the custom fields in JIRA and TFS, we see an error pop up that just says "ProtocolError". 

We can't find any additional info on this error. We'll be providing the logs to the plugin company to see if they have more info, but I wanted to see if anyone else has seen this problem in the initial configuration before. 

1 answer

Hi Nate,


This error could be related to multi reasons. In your case based on the logs provided, the connection problem was caused by an error thrown from Jira due to the duplicated key issue. You may refer to the solution provided by Atlassian at


If you need further assistance, please feel free to contact us at our Support Portal or


Best Regards,

Kit Tin Mak

[Spartez Support Team]

Suggest an answer

Log in or Sign up to answer
Community showcase
Published Feb 07, 2019 in Marketplace Apps

A Timeless Love Story

It started as any story starts, on a normal, rainy day.   Admin meets App, and her name was Klok2, and like any first relationship we were both trying to make it work but neither one knew what...

442 views 8 26
Read article

Atlassian User Groups

Connect with like-minded Atlassian users at free events near you!

Find a group

Connect with like-minded Atlassian users at free events near you!

Find my local user group

Unfortunately there are no AUG chapters near you at the moment.

Start an AUG

You're one step closer to meeting fellow Atlassian users at your local meet up. Learn more about AUGs

Groups near you