As per Article 6 of Schengen Borders Code, Indian nationals who are visiting France/Schengen Area for not more than 90 days for tourist/private trips should :

• justify the purpose and conditions of the intended stay,
• have sufficient means of subsistence, both for the duration of the intended stay and for the return to their country of origin or transit to a third country,

2. List of supporting documents which the French Frontier Police  may request in order to verify the fulfilment of above  conditions:

• Lodging:
• an invitation from the host if staying with one;
• a supporting document from the establishment providing lodging or any other appropriate document indicating the accommodation envisaged[e.g. attestation d'accueil by concerned Marie in case the individual is staying with his/her relatives];
• Itinerary:
• confirmation of the booking of an organised trip or any other appropriate document indicating the envisaged travel plans;
• Return:
• a return or round-trip ticket;