About Sick Leave,casual Leave And Earned

In our company at Hazira, Surat the management has changed the HR leave policy. In which now they say SL at the discretion of the management. Also in our HR portal CL/PL is only shown and SL is not shown.
My query is:-
1) Our immediate supervisor says that he will not sanction my SL as he says it affects the promotion cycle.
2) The certificate of outside doctor we bring they say is available from anyone and hence before claiming it and having any problem get it verified from our Occupational Health Centre doctors and take the certificate from them.
Please update on my above queries.
Regards
Bhairav-9374751887

ANDHRA PRADESH SHOPS AND ESTABLISHMENTS ACT, 1988

Type of Leave Privileged Leave/ Earned Leave Casual Leave Sick Leave Maternity Leave
Quantum per year 15 days Not exceeding 12 days Not exceeding 12 days Wages for 6 weeks preceding delivery and 6 weeks after delivery of the period of leave
Entitlement On working 240 days in a year During 12 months of service and subsequent 12 months During 12 months of service and subsequent 12 months For every woman who has completed 6 months or more service
Accumulation 45 days in 3 years Not allowed Not allowed Not allowed