Recognise UUID formats and repeated values

Inspect compact and hyphenated forms, identify a repeated UUID and read a refusal for a different kind of identifier.

For operators

Inspect compact and hyphenated forms, identify a repeated UUID and read a refusal for a different kind of identifier. This is isolated practice with invented records. Nothing is uploaded or written into a live system.

Read these instructions on any device. Watch or practise a chapter on a desktop or laptop, with a desktop or mobile application layout. Demonstrations use sample data and simulated scanners.

Recognise UUID formats and repeated values

  1. Open UUID inspection

    Open UUID inspection.

    Inspection reads a value’s structure. It does not verify who generated it or whether another system has used it.

  2. Enter two representations of one UUID

    Enter two representations of one UUID.

    A compact UUID has 32 hexadecimal digits. Hyphens do not change which UUID it represents.

  3. Check the structures and repetition

    Check the structures and repetition.

    Both values pass the structure check, but they name the same UUID. Review the repeated-value count.

  4. Enter an order reference

    Enter an order reference.

    An order reference is not a UUID. Do not add characters or remove parts just to make the inspector accept it.

  5. Read the structure refusal

    Read the structure refusal.

    The tool refuses the value instead of inventing a UUID from it. Check the expected identifier type with the receiving application.

Watch or practise this chapter

Review the result and its limits before using it in another application.

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