XML Parsing Error: mismatched tag while upserting objects

[guillaumedenece]

Hello everyone,

I currently am experiencing an error while upserting objects in SF from our backend.
Before sending the data to the Salesforce API (version 41), I log the xml that I send and it is well formatted. The job then fails on Salesforce side with the error: "XML Parsing Error: mismatched tag". Indeed, when I look at the XML processed by salesforce, I can see this:
<Client__c>a050X00000zLdPsQAK</Clieent__c> in the middle of the XML. I do not really understand why.

Did anyone ever face this problem and find a trick to solve it?

Here is the configuration that I use:

• ruby 2.6.0
• rails 5.2.2
• gem 'restforce', '~> 3.1.0'
• gem 'salesforce_bulk_api' , '~> 0.12.0'

Thank you very much