Script to import invoice file into Pastel Partner

[traubt]

Hi,
I'm new to the forum. I hope I'm in the right place...

I recently developed a program (in Python) for my friend which converts invoice file from POS system to Pastel invoice file (CSV format) ready to be uploaded.

I tried to look for example on how to upload (import) the file using a script/API but could not find any.
I looked at Sage SDK but only found API to handle single transaction.

Does anyone know how to upload invoice file to Pastel using code/script.

Attached an example of file.

Thanks in advance.

Tomer.