Hello Team - We are facing issue in integrating Salesforce with Sharepoint online, i have listed out the details of the issue and was wondering if anyone has worked on this integration before? 

Details: Requirement: We have a requirement to upload document attachments along with metadata from Salesforce to SharePoint Online. Documents can be of any type. For e.g. PDF, Doc, CSV, Png, PPT etc. - Once the document has been uploaded to Salesforce, there is a rest api integration which pushes the details from Salesforce to Sharepoint(Attachments+Metadata(Example: Date,Name, ID etc)

Problem Statement: Salesforce can store documents either inside Attachment object or in File object. We are able to read the attached document and its metadata from both the object. But salesforce encodes the document into binary file while storing it into Salesforce. While uploading the document(via REST integration) into SharePoint, we are not able to decode the binary file into the actual file stored and hence the uploaded document is not opening in SharePoint site with following error “Failed to load the document. Try to reload.” (We do not want to use the FILE connect option (Standard Salesforce connector) since it has its limitation and does not meet the business requirement)

Can anyone help me to direct this to the right group.