Can someone check the grammar sentences??? Thanks in advance!!!!!!!!!!
I am native Spanish so if someone need it corrections in Spanish I can help

Request of information:
We are conducting an extensive revision of our Sales process, which involves activities such as updating information, checking accuracy of the information contained in our files, alignment with corporative policies, etc. At the end I hope to come up with good suggestions in order to improve our recording as well as create an internal manual which can create a process by means of which we can assure that all the principal aspects are cover on a regular basis.
I was informed that you could help me in order to know how the sales database actually works, due to the fact that we do not have any internal manual or procedure describing the methodology of the process, and as the new people in charge of this subject I have some doubts that I need to clarify before starting.
My main questions are the following:
- Does exist a corporate policy regarding Sales process, in order to know standard methodology of works? If exists, can you say me where can I find it?
- The record number contained in our files is the same using around the world?
- Do we need to keep copies of the whole sales? Doesn’t matter whether or not they are from our clients?
- I would like to know how in your company control that the information is always updated and accuracy with the counterparts, e.g. when the agreements need to be renewed or the price modified (according to the contract), that the counterpart keeps the same information, that the contact is updated when the person in charge is changed (regarding this point I have seen that in this case that in our files still appears the formerly responsible and not the new one), how the payment are controlled. So basically I would like to know whether exist in your department some procedures that we can also apply in my department. In my opinion, it is always a good idea follow the best practices and if there is a good practice in another department I would like to adopt it, otherwise I am going to create one. Basically I want to have some procedure steps, concise and precise which cover all the points that I mentioned above.