I want to update the core table column from type int to decimal.

<column xsi:type="int" name="column_name" padding="10" unsigned="true" nullable="false" identity="false" default="0" comment="comment"/>

I have updated the column as <column xsi:type="decimal" name="column_name" scale="2" precision="20" nullable="false" unsigned="true" default="0" comment="comment" /> in my custom modules declarative schema.

While upgrade I am facing this exception.

Element 'column', attribute 'padding': The attribute 'padding' is not allowed.

Element 'column', attribute 'identity': The attribute 'identity' is not allowed.

1 Answer 1


<?xml version=""1.0""?>
<schema xmlns:xsi=""http://www.w3.org/2001/XMLSchema-instance"" xsi:noNamespaceSchemaLocation=""urn:magento:framework:Setup/Declaration/Schema/etc/schema.xsd"">
    <table name=""catalog_product_entity_varchar"" resource=""default"">
        <column xsi:type=""decimal"" length=""512"" name=""value"" nullable=""true"" comment=""Value""/>

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