Hello Sergii,
We at StrataVAR have a lot of experience in this area, being involved for more than 20 years building integrated tools for Cisco Partners.
The answer to your question is a bit more complex than a simple reply in this forum, as it depends on overall business functionality, your access rights too CCW API etc.
Please feel free to contact me directly.
In general:
Cisco provides several useful sets of API accessing CCW.
However, CCW is not actually one system, and the APIs reflect the underlying subsystems.
1. Estimates - a rich set of API to manage the list, download and upload of Estimates.
2. Deal Reg - limited to retrieve only
3. CCW-R Quotes - limited to retrieve
4. Sales Order Status - limited to tier-1 partners only
If you are interested in more detailed information, please feel free to contact me directly .