English to Russian Law/Patents Law: Contract(s)

Помогите, пожалуйста, грамотно сформулировать данный отрезок предложения? Что-то не идет ((

Each invoice must additionally come from Service Partner with the proof-of-activity documents accompanied directly or via tools as agreed in Attachment D1 or otherwise as set out in this Appendix D.

"Tools" до этого встречалось в следующем контексте:

In order to ensure quality and operability of the complete project implementation, the Prime Contraсtor may direct Service Partner in the usage and implementation of development-technologies and –tools as well as quality-systems and may take influence – to the extent necessary – on Service Partner's processes.