valuation allowance automation

Summary:

Tax automation for valuation allowance

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Is it possible to use Tax Automation to automate valuation allowances where the source account are Total temporary differences? We'd like to update valuation allowance by a percentage of total temp differences instead of manual input for each entities given the large number of entities we have. I tried this but the value it generates are not stable. It missed certain temp difference account values that are in the "Automated" movement column. Thanks for the advice

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