A secured party holding collateral must take reasonable care of it, which for instruments and chattel paper includes the steps needed to keep rights against prior parties alive; reasonable expenses are the debtor's, accidental loss is the debtor's risk so far as insurance does not cover it, the secured party must keep the collateral identifiable (fungible collateral may be commingled), and may use or operate it only to preserve its value, as permitted by court order or, except for consumer goods, as agreed. A secured party holding control over a deposit account, electronic chattel paper, a letter-of-credit right, investment property or a controllable electronic record must, after the obligations are satisfied and within ten days of the debtor's authenticated demand, release control (section 9-208), and a secured party that has notified an account debtor must send a release within ten days of demand once no obligation remains (section 9-209). On a debtor's authenticated request the secured party must, within fourteen days, approve or correct a statement of account or a list of collateral, or authenticate a statement of the aggregate unpaid obligation; one free response per six months, a reasonable charge for more, and a secured party that claims no interest or only an interest in specific collateral must say so (section 9-210).
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.