When FIMS creates the Spending Policy journal entries, it uses a journal key of SR for Spending Rule.  If you are just implementing spending policy for the first time (or perhaps not since a different code could have been used before), it is possible this value is missing from the journal key code table.

To fix this:
  1. Go to General Ledger > File Maintenance > Journal Key Code Maintenance
  2. Scroll down the alphabetical list to confirm SR is not there
  3. If not, click new and enter SR for the code and Spending Rule for the description.
  4. Click Save
  5. Rerun the create journal utility.