@Farrukh_Naseem I refactored the original XMLRPC library, and you can find it linked in this forum post:
Assuming you’re using the PHP legacy iSDK library.
There are three key changes that are required.
- The URL endpoint changed: https://api.infusionsoft.com/crm/xmlrpc/v1
- Replace the legacy API key with a SAK
- Pass the SAK in the custom header: X-Keap-Api-Key: {SAK_GOES_HERE}