Related Topics • INFO: ISO Auto Holding of Received APDU until Shipped APDU is received from Lender • INFO: Changing Note Types for ISO • INFO: Expire Dates and ISO ILL • INFO: Forwarding Requests via ISO ILL • HOWTO: Going Live with Lending or Borrowing Only • See more

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SUMMARY

When using ISO ILL, ILLiad restricts the sending of ILL ISO APDUs based on the ISO ILL state tables, as defined in the ISO standard. This prevents ILLiad from sending "illegal" APDUs (for example, an ILLAnswer - Unfilled *after* an Expired has already been sent). If an action in ILLiad generates an illegal state transition, the ILLiad status will change to ISO Attention for that request and a note that describes the illegal transition will be displayed in the Notes field.

The graphical display of the ISO ILL Tracking in ILLiad will show a red X for items that were not sent because of illegal state transitions.

Resolving state transition problems generally takes communication with the requester or responder in order to fix whatever problem exists in the request.