Source of Legal entity for withholding Tax invoice AP

Summary

from where LE of Withholding tax invoice is derived , if we changed that . what is the impact for non-PO AP invoice

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Hi Community,

we have one BU and multiple LE's, we did setups for withholding Tax,where withholding tax is created after payment of standard invoices. for non-PO invoices we see that LE was not as expected, we want to know how can we change LE, (any setups). how changing LE will impact

if we can write SLA , we want derive LE based on Invoice type as withholding for non-PO invoices. Im unable to find correct way . Please suggest