Loan history export: Holdings ID

Purpose: Make holdings ID field label consistent with the CSV export of overdue loans and with other UUID labels.

Scenarios

1. Scenario
   • Given a user's open loans
   • When exporting as CSV
   • Then label the holdings ID field Holdings ID
2. Scenario
   • Given a user's closed loans
   • When exporting as CSV
   • Then label the holdings ID field Holdings ID

Notes:

• Currently, this field is labeled Holdings record ID.