The Salesforce Nonprofit Success Pack (NPSP) is a free, add-on application that pre-configures your Salesforce Enterprise edition to be better suited for the needs of a Non-profit organization.
You can use the NPSP to setup households, manage donations, organize volunteers, and do much more. From FormAssembly, you can collect and send data to any pre-configured or custom object within the Nonprofit Starter Pack.
For more information on the integration between FormAssembly and the Nonprofit Starter Pack, check out the video tutorial below.
If you receive a connector error that mentions "Dependent class is invalid and needs recompilation" as part of the error code, you may need to recompile your classes on the Salesforce side.
You can do this by going to Setup → Apex Classes and then clicking on "Compile All Classes"
Please note, you will likely need to wait for the jobs to run overnight before this error is resolved.