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Error: Invalid use of Null when accessing a saved form

Guidance on error: Invalid use of Null when accessing a saved form

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Written by Connor Baeza

When accessing the form, you may encounter the following error:
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​Error No: 500-100 Internal Server ErrorCategory: RioSGenData2 (0x800A005E)Description: GenerateScreen@340: showForm()@999: sgdisplayscreen@60: preprocess@435: Invalid use of NullFile: /rio/ScreenGenerator2/ScreenGen.aspLine: 213

This error can occur due to one of the following reasons:

  1. Incomplete fields in Assessment Maintenance.

    • One or more configurable fields have not been completed.

  2. Incorrect SQL queries or read-only fields.

    • Fields using a Generic Select List or Assessment Read only fields may be incorrectly configured.


Resolution

Check Assessment Maintenance:

  1. Click on Assessment Maintenance from the RIO menu.

  2. Select the Form radio button.

  3. Scroll to the form and single-click the row.

  4. Click Modify.

  5. Scroll through the list of fields:

    • Ensure all configurable fields have a green tick.

    • If not:

      • Open the field.

      • Configure and select Use Format.

      • Save the form.

Validate SQL queries and read only fields:

  • Review any fields using:

    • Generic Select Lists

    • Assessment Read-Only fields

  • Correct any incorrect configurations.


Next steps

If the issue persists after completing these checks, please type talk to a person and the Digital Assistant will put you through to a live support agent.

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