Suggested by Felix Vazquez Carrillo – Needs Votes
You create in POS a mixed retail transaction/ticket, which means, a transaction that includes lines with both positive (Sales) and negative (Returns) quantities.
Then, only one CFDI document is generated. Depending on the total transaction amount sign, it can be a document for sales or a document for returns.
All transactions are included in just one Global CFDI document from Retail Headquarters.
It should be desirable to split them and create: 1 Global CFDI for sales and 1 Global CFDI for returns.
***See as reference: Issue 303915