The system needs a way to be able to process sales tax credits to AR bills that are using an external tax provider. Tax adjustments currently do not work when being run for an external tax provider, you simply receive errors when attempting to do this workflow.
Currently there is no ability to do this process and the only built in procedure is to entirely void a taxable AR bill and reprocess a tax exempt AR bill.
If a partial payment was applied to the bill or the GL period the bill was generated in was closed, the client needs to process a credit adjustment to that bill, and then process a GL reclassification to ensure taxable liability is reduced and not income. This is an incredibly convoluted and complicated procedure.
Sales Tax credits are a frequent process that needs to be able to be utilized, specifically in the construction and facility service industries and a lack of this procedure in Acumatica with an external tax provider is a glaring omission.