RESTlet being called twice

Hi there, I am new to this forum, so I apologize if this question can be answered by checking the knowledge base or any other NetSuite forum.

We have a restlet that creates lot numbered inventory items, as well as any inventory adjustments with multiple locations enabled. The calling script is sending about 50 products at a time, so we don't hit neither the timeout gap or the usage calls gap.

What I have noticed is that, when there are many inventory adjustments to be made on a single call, the restlet seems to 'execute' the call again - which means it starts the product batch from the start. I can't find any reason for it to do that, which is obviously problematic since we plan to throw batches of multiple products in the next coming weeks as a way to automate our inventory process.