https://userapps.support.sap.com/sap/support/knowledge/en/1923283
1923283 - SAP POS 2.2 Build 1019 Mixmatch 999 in the Quantity field | SAP Knowledge Base Article
In previous builds, when configuring Buy 1 Get 1 mixmatches, the quantity field configured as 999 would include all items in its discount distribution Under...