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Odoo 19.0 drops legacy XML group tag attributes, breaking older search views

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Odoo 19.0 has introduced breaking changes to its XML view engine, specifically affecting the use of the group tag in search views. Attributes such as expand='0', name='group_by', and string='Group By' are no longer supported and will trigger runtime view errors. The change stems from a refactoring of the view rendering engine, documented in an official Odoo commit. Developers migrating to version 19.0 are advised to audit their XML codebases and remove these deprecated attributes to restore compatibility. Keeping only valid definitions within group tags is sufficient to resolve the errors and ensure a smooth upgrade.

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Odoo 19.0 drops legacy XML group tag attributes, breaking older search views · ShortSingh