Merge Salesforce files (PDF, DOCX) with APEX

* Before starting, please note that:
- your API needs to be enabled.

- the Salesforce button should be enabled, on your form document template.

- If you are merging the Word template and PDF template, make sure that the output for the word template is PDF.

1- Class setup
class genreq { req_Email Email {get; set;} req_UpdateObj UpdateObj {get; set;} List<req_GenData> GenData {get; set;} String RequestedBy {get; set;} } class req_GenData { public req_GenData(Id Id, Integer formID){ this.Id = Id; this.formID = formID; } Id Id; Integer formID; } class req_UpdateObj { String sf_object_api_name {get; set;} String field_api_name {get; set;} Id Id {get; set;} String value {get; set;} } class req_Email { String to {get; set;} String subject {get; set;} String body {get; set;} }

req_Email email = new req_Email(); email.to = 'YourEmail@gmail.com'; email.subject = 'donkey'; email.body = 'CDO';

3- Setup an object to update in Salesforce -  this will run after the merge process is done.
req_UpdateObj obj2update = new req_UpdateObj(); obj2update.sf_object_api_name = 'Account'; obj2update.field_api_name = 'FTPass__c'; obj2update.Id = '0011t00000EqSvL'; obj2update.value = 'merge is done';

4-  Construct the list of records and forms to you'd like to merge.
In this instance, sending 5 accounts, and 3 contacts for merge.