When importing an Interaction batch, interactions for an inactive constituent are rejected with the error, "You must provide either an interaction or a constituent." Note: Inactive constituents can have interactions added to them manually through the Add interactions action on the Interactions tab.
We are currently evaluating this issue for a fix in a future service pack.
As a workaround, you can mark the constituent active to successfully import the interaction, then change the constituent back to inactive.
Steps to Duplicate
1) Create an import file containing the lookup ID for an inactive constituent as well as all the other required fields: Name, Expected date, Contact Method, Summary, and Status 2) Map the fields accordingly import the file. 3) Notice the record for the inactive constituent is rejected with the error message, "You must provide either an interaction or a constituent."