Raise returns through either system however ensure statuses are communicated again to the customer.
This training will result in you turning into equipped with the basics of SAP Business One and gaining a SAP Business One accreditation, which will make you more employable in the SAP Business One market.
But I do not really think it has any real benefit over $; in case you are proficient at coding I do not see why you'll implement anything nontrivial in Excel given the selection.