How should I correct inventory?
To correct inventory for a synced group, update one variant in the group to the quantity you want.
Do not update every variant in the group to the same quantity manually. SKU Stock Sync may treat each manual change as a separate inventory change, which can cause the changes to be combined.
If you want a synced group to have stock of 10, update one variant to 10. Do not update every matching variant to 10.
Why you should only update one variant
SKU Stock Sync treats variants in the same SKU/location group as sharing the same stock.
When you change inventory for one variant, SKU Stock Sync can use that change to update the other variants in the group.
If you manually update multiple variants before SKU Stock Sync processes the group, the app may see multiple inventory changes for the same shared stock.
For example, if two variants are at stock 0 and you manually change both to 10, SKU Stock Sync will see multiple increases instead of one correction.
Correct approach
Pick one variant that belongs to the SKU/location group you want to correct.
In Shopify, change that one variant's inventory to the quantity the group should have.
SKU Stock Sync will process the related group during a scheduled sync, or sooner if manual sync is available and the group is waiting.
After the sync runs, check the other variants in the group to confirm they were updated.
Example
If a synced group should have stock of 10:
Correct: update one variant in the group to 10, then let SKU Stock Sync update the rest.
Incorrect: update every variant in the group to 10 manually.
If you already updated every variant
If you already changed every variant in the group, wait for the next sync to finish and check the final quantity.
If the final quantity is not what you expected, correct the group again by updating one variant only to the desired quantity.