Unable to insert data and retrieve data from customModule with v2 but it was working with xml insert and fetch record using curl. I have registered app with admin account not with super admin account. Please guide me as I am struck with this.

Tried different options :
=> https://www.zohoapis.com/crm/v2/CustomModule_1/search?criteria=((Email:equals:pankaj.k@sarv.com))
Response :

=>https://www.zohoapis.com/crm/v2/Custom_Module1/search?criteria=((Email:equals:pankaj.k@sarv.com))
Response { "code": "INVALID_MODULE", "details": {}, "message": "the module name given seems to be invalid", "status": "error" }

Regards
Pankaj Kumar