Configure Default Business Purpose value

This step must be done by a Salesforce administrator.

There are sometimes you would want to use a default value for Business Purpose when creating an Expense or booking a Trip. You can follow the steps below to configure this. Once this is done, when you create a new expense (or trip), the business purpose will get auto selected

1. Create a new record to hold your generic business purpose. In this example I will create a new Account record called "Acme General Purpose". Please note you can also create a record in a custom object. 
2. Once this is done, copy the record id of the Account from the url bar. In the example below my value is "0014K000006OwfsQAC"
3. Goto Setup --> And search for "Custom Settings" in the Quick Find search box on the left hand side (see image below
4. Click on "Custom Settings" and then click on the button "Manage" next to "SalesTrip Preferences" as shown below
5. In the next screen, click on the "Edit" button to modify this record
6. Paste the record id you copied in step #2 into the "Default Business Purpose" field
7. This should default the business purpose to the created record when a new expense is created. 

PS: You can always override this value when creating the expense record.