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Wales PLASC Error 420

Use this guide to resolve Wales PLASC Error 420

Special Schools Only

Welsh Government validation;

  • To identify the type of need for which the school is formally approved to make a provision.
  • There must be at least one <Provision>
  • No information on ALN types for which school is approved 

Explanation :

  • Check your Special School Provision(s) via the following screen: Config>Administration>Characteristics

Further Guidance


THE EXAMPLES AND SCREENSHOTS IN THIS GUIDE ARE FOR ILLUSTRATION PURPOSES ONLY

From the left menu go to Config>Administration>Characteristics

Pathway

Check Special School Provisions in the School Characteristics panel to check/update the information for your school.

All fields marked with an asterisk* must be completed in order to save the record. The drop down choices and visible fields may differ dependant on your School Characteristics.

Remember to click the top left Save if you make any changes.

IMPORTANT in order for the resolved error/query to be removed from the list of errors/queries you would need to generate a new Census return and remember to use save & validate for the errors/queries to update/clear.

Updated on December 12, 2025
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