# Requirements for the Reimbursement and Outgoing Payment Request System

## Overview

One short-term goal of the Non-Profit Accounting Project is to create a
system that allows (a) members of an organization, and external parties, to
submit requests for reimbursement or request for payment (e.g., invoices),
and (b) the organization's bookkeepers, accountants, and managerial approvers
to review those requests, add them to the organization's books, and prepare
payment.  The primary motivation for this project is to save time both groups
spend on handling reimbursement requests and outgoing payments, and reduce
turnaround time for these requests, and to help members file complete
requests that are easy for bookkeepers to review and accept.

Members of the organization could be employees, members of projects
represented by the organization, or others doing work to advance the
organization's mission—anyone who the organization might want to reimburse or
pay.

The system should not make assumptions about specific reimbursement policies
or invoicing requirements.  Instead, it should be possible for a bookkeeper
or administrator to define follow-up questions and what responses are and are
not eligible for reimbursement or payment.  Early versions may require
sysadmin-level technical expertise to do this, but ultimately it should be
doable by a bookkeeper with appropriate privileges.

## Requirements for first release

### Defining the request form

Requests for payment have four states: In Progress, Submitted,
Accepted, and Rejected.

Administrators can define questions to ask the member about the entire
request, and about each expense in the request.  The system can display
forms, validate answers, and record answers for questions with the following
types of answers:

* Text
* Boolean (yes/no)
* Selection (from a list of values)
* Number
* Currency (this is probably a string that's validated to have a numeric part plus an optional currency code)
* Date
* File upload

For each question, the administrator can define any number of conditions to
check against the member's answer.  When a member submits an answer that does
not comply with all of the conditions, the answer is flagged in the interface
as making the expense non-reimuburseable.  The first release must support the
following conditions:

* Boolean: is yes, or is no
* Selection: the selected value is in a specific subset of values
* Date: the value is N days before and/or after today or a date in another answer

Using these same conditions, the administrator can define questions that are
conditional on other questions' answers.  These questions are only presented
to the member when they submit an answer that meets the specified conditions.
For illustration purposes, the common deployment is expected to have
relatively few unconditional questions about each expense (type of expense,
receipt, amount), and then a series of conditional questions based on those
answers (e.g., follow-up questions specific to airfare expenses,
accommodations expenses, etc.).

### Member workflow

Members can log in and see the status of all their requests.  They can also
create a new request, which starts in the In Progress state.

When they view a report, it shows the questions and answers about the entire
report, and a list of associated expenses.  Viewing a specific expense
similarly shows all the questions and answers about it.

When a report is In Progress state, the member can edit any answer in the
report or an associated expense.  They can also add an expense, which begins
by asking them unconditional questions associated with expenses, and then
follow-up questions as necessary based on those answers.

When an In Progress report has at least one expense associated with it, and
all questions have been answered, the member may submit the request for
approval.  If any of the answers do not meet the administrator's conditions
for payment, the member may still submit the request, and provide an
explanation for why the request should be paid (e.g., because it was
approved in advance).  Once the request is submitted, it moves to the
Submitted state.

### Bookkeeper workflow

Bookkeepers can log into the system and see all requests.

When a bookkeeper reviews a Submitted report, they can change the report's
state, and include a note explaining why the report was moved to that state
(e.g., moved back to In Progress because a specific receipt was insufficient
documentation).  When they do this, the system sends e-mail to the member
letting them know about the change, including the rationale provided by the
bookkeeper.

The bookkeeper can export any request to the books.  The first release of the
software will simply provide an archive that includes all of the request's
supporting documentation, plus a `.ledger` file with entries for each
expense.  However, note that when building this feature in the code and UI,
it should be relatively generic.  Exporting needs to be abstract enough that
it's simple to integrate with other accounting systems.  Even the mechanics
may be different; for example, an SQLedger exporter may add entries to the
system directly, rather than providing the bookkeeper with a file download.

## Requirements potentially for first release

These are features that we would like the system to have, and it may make
sense to make them requirements of the first release depending on how it's
built.

* CiviCRM integration: Many NPOs are already using CiviCRM.  CiviCRM
  integration would provide a familiar interface to users, and simplify
  system administration for the organization.  It may be possible to build
  the system as a CiviCRM extension.  If so, we would get this feature for
  "free."
  
* Usable without JavaScript: For consistent mission advocacy, it's important
  that some organizations not require members to use JavaScript.  (e.g., Tor
  browsers typically have JavaScript disabled because it can undermine Tor's
  anonymity guarantees.)  It should be possible to submit payment
  requests without JavaScript.  The interface can be enhanced when JavaScript
  is available.
  
  Whether or not we do this in the first release probably depends on what
  framework we decide to build on.  If the framework itself requires
  JavaScript out of the box, it may make sense to have the first release go
  with the flow, then work to add JavaScript-free functionality in a later
  release.
  

## Requirements for later releases

These are features that we would ultimately like the system to have, but we
know aren't necessary for the first version.  It's good to keep them in mind
when architecting, but also to know that they've been considered and aren't
immediately necessary.

* Allow optional questions: With this, question conditions probably need to
be extended to address the case of "other question isn't answered"

* Additional exporters:
  * Export to SQLedger
  * [Certainly many more, feel free to add them here]
* Richer lifecycle management: A leader may need to approve a request before
  it's added to the books, like an employee's manager or a program director

* Automatic currency conversion for validation (e.g., validate that an amount
  in an aribtrary currency is within a limit in USD)

* Validate currency amounts from outside data sources: The main case for this
  is per diem, where many organizations use rates that are determined by
  another party (e.g., US GSA) and updated periodically.
  
* Data import: Apps like [Tricky Tripper](http://trickytripper.blogspot.de/)
  let users track expenses for a trip as they go.  The system could import
  this data to prepopulate answers to questions about the request and
  expenses in it.  Probably there would be an import API that can map
  different import formats to a common format, and then administrators can
  define how questions in their system can be answered based on imported
  data.