Hello

with all respect and appreciation to you,

According to the mentioned facts, I would like to clarify to you that 
Before applying for Schengen visa, you need to review the site or the advertisement board of the consulate to which you will send the application. To obtain Schengen visa, provide the following:
Application form with all data
The administrative fees 60
Travel document with the photo
The documents of the purpose for the trip, such as the invitation or trip data
Hotel reservation and prove that you are in a job trip
Residence
Financial documents
Travel insurance covers at least 30,000 EURO including all expenses you need if you wanted to return to your country. this insurance must be valid in all Schengen states. Note that Schengen visa is valid for maximum 3 months within 6 months. The duration of the visa is specified in the visa under the title “duration of visa” generally you cannot overstay.
The conditions to enter Schengen area:
You need to explain the purpose of entering or visiting the area and prove that you have completed all conditions of residence. Also, prove that you have enough financial resources for the duration of residence and to return. They should not consider you as a political  or  interior security threat, or a threat for the general heath or  international relations for any state in Schengen. In the information system of Schengen, there should be no warning against you regarding ban entry. This is all regarding your inquiry