A total can hide a local shortage
The company owns twenty units, but eighteen are in the stockroom and two are at the shop. A customer asking for five cannot be served immediately despite the overall number. Total and local stock answer different questions.
When sales, purchases and transfers use the correct location, Salelog can show both without implying that goods are instantly available everywhere.
Why a transfer is better than two corrections
One negative and one positive adjustment are independent. Forgetting either side changes the business total. A transfer represents one physical move with a source and destination, preserving where the product went.
Keep the structure proportionate
Good candidates include the main stockroom, a shop, another branch, a sales van or an event. A shelf does not need to become a separate location unless the business genuinely controls availability at that level.
Requirements for aisles, bins, pick routes, packing, batches or carriers belong to a warehouse management system rather than this simpler model.
Agree on the point of recording
Some teams record before goods leave; others wait for arrival. Choose one rule so temporary differences are understood. After completion, check the linked source and destination movements against the physical quantity.