Ltp of Number of instruments that can be obtained in a single ltp call is it 500 or 1000?

I am trying to retrieve ltp of 501 instruments at one using this endpoint
https://api.upstox.com/v2/market-quote/ltp?instrument_key={scrip_list}

The documentation says " LTP Quotes

API to retrieve the LTP quotes for one or more instruments. Provides LTPs of up to 1000 instruments in one go."

but I am getting error “{‘status’: ‘error’, ‘errors’: [{‘errorCode’: ‘UDAPI100043’, ‘message’: ‘Data of only 500 instrument keys can be requested in single API call’, ‘propertyPath’: None, ‘invalidValue’: None, ‘error_code’: ‘UDAPI100043’, ‘property_path’: None, ‘invalid_value’: None}]}”