Doc IO creates the PObased invoice as Incomplete and does not create VAT line,even PO line matched.

Summary:

In our test, Payables Agent Document IO correctly recognized the PO information and the invoice was associated to the PO line,

However, the imported invoice was still created in Incomplete status and no VAT tax line was created.

• Invoice total: 10,181.09
• Item line amount: 8,853.12
• Expected VAT: 1,327.97 (15%)
• Tax region after Document IO import: no tax line; tax total 0.00
• Invoice amount due: 10,181.09

If the invoice is created as Incomplete, what specific condition is preventing it from becoming complete and triggering tax calculation?

Is there any additional standard setup or supported configuration required for tax calculation to occur automatically after Document IO imports a PO-matched invoice?