@Henrik ****
I did read the embassy website and I prepared all my documents. However there were no sections on the application form that asked for invoices, just financial evidence, employment proof, etc
I was waiting for them to request for more documents where I could submit.
I also did do some searches in this group but I did not find any information about having to cram any random information into a pdf and just submitting even though it was not the answer to their question.