You can edit the SKU too if you want to change a particular design or the product type for an SKU.
Step 1: Login to the merchant panel
Step 2: Go to SKU library > View SKUs
Step 3: Click on the Eye icon on the right to preview the SKU details
Step 4: Click the Pen icon to begin editing the SKU
Step 5: You can change the position of the design and the design too.
Step 6: Verify the product SKU and click Save SKU