Shopify limits
"This discount's active period overlaps with too many other automatic discounts" or "You've reached the maximum number of active app discounts"
Shopify allows up to 25 active automatic discounts at a time, on every plan. Scheduled and test-mode discounts count. Delete old discounts, set end dates on finished promotions, or use a discount code for less important offers.
"A discount with this code or title already exists"
Codes must be unique in your store. Choose a different code or title.
"Something went wrong on Shopify's end"
A temporary Shopify problem. Wait a minute and save again.
Form messages
"Title is required" / "Discount code is required": fill in the Title (automatic) or the code (code discount).
"Start date is required" / "End date must be after start date": check the Active dates card.
"Select an operator for the condition" / "Enter a value for the condition": a condition is half-filled. Complete it or remove it.
"Select at least one product / collection / country / province/state / market": open the condition and select at least one.
"Select or enter at least one customer tag": type a tag and press Enter.
"Enter at least one postcode or pattern": add at least one postcode. See Postcode / ZIP.
"Configure the collection threshold" / "Enter a threshold value": pick the collections and enter the amount or count.
"Enter a valid amount for each currency": a per-currency amount is empty or invalid.
"Each target needs a valid discount value": enter the amount for Percentage, Fixed Amount Off or Fixed Price.
"Percentage cannot exceed 100%": use 100 or less, or choose Free.
"Select at least one rate for specific targeting": add a rate under Choose specific rates.
"Enter a valid amount for excluded rates": set the Maximum eligible rate, or untick the exclude option.
"Select at least one customer segment": choose a segment, or switch to All customers.
"Enter a valid number of recurring payments (minimum 2)": under Recurring payments, use 2 or more, or choose first payment only.
Something else
"An unexpected error occurred while saving": try again in a minute. If it keeps happening, chat with us in the app and include a screenshot.