How to work Tax Control Amount for tax calculation of the invoice

Summary:

I was wondering who to work or use Tax Control Amount for tax calculation of the invoice.

I pass this Tax Control Amount to the invoices for tax calculation through the integration from third program, but most of all tend to work fine without any errors, but some others error out saying something like negative value.

Hence, I'm eagle to know about how this Tax Control Amount works for invoicing.

Best Regards,

SungHyun

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