Running the following query
https://.freshdesk.com/api/v2/search/tickets?query=%22cf_sub%3A%20’test’%22
Where cf_sub is a valid custom field.
Query always return
{“results”:,“total”:0}
Trying with built-in field like
query=%22priority%3A1%22
returns the records we want
Is this a known issue?
Hi @dcohendumani ,
Welcome to the Freshworks developer community 
Can you try to query the custom field with the Suggested query params below as per the alternate documented in the Example 4 of the Filter Tickets API.
Suggested Query Param: https://.freshdesk.com/api/v2/search/tickets?query=%22custom_string%3Atest%22
Let us know if this works!