* Rename method
* Update staircase/non staircase validations
* Add errors to type
* Remove validate_shared_ownership_deposit
* Don't add setup BU errors, deduplicate different sale type errors
* Add tolerance
* Reuse method
* Rename methods
* Skip type error completely in BU
* Update validation messages
* Update over tolerance method
* C:DC-3338: Add tolerance to grant calculations
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Co-authored-by: Kat <katrina@kosiak.co.uk>