It's optional.

Basic documents:
- Résumé/CV
- Copy of degree cert

Optional documents:
- Academic transcript
- Postgraduate certs
- Professional certs
- Letter of recommendation
- Evaluation reports
- Customer testimonials
- Work samples/portfolio (writing, ppt, designs, videos, images etc)
- Photos of awards received or event participation

Recommendation:
Provide the 2 basic documents + any 3 optional documents

If I still dont get the official transcript and cert,can I bring study completion letter and previous result slip