Hello,

I will need some numbers to recreate this.

Product details – Product Type, Product Price
Coupon details – Coupon Type, Coupon Amount, product it applies to
Commission details – kind of commission that it is

I will assume it is because a coupon is messing with one of the commission values.

cheers,

Jamie.

@matthewjamesboyd1984 — I would try once with a “normal” product (simple) and no coupon, then as a normal product with the coupon. Then we can isolate if it’s a coupon issue, or a “the events calendar” custom product type issue. Let us know!

I was having a similar issue still not fixed. If I create a coupon that has a 50% discount for friends and family that also gives them free shipping, I get this non negative integer error. If I disable the free shipping as part of the coupon code, it seems to work fine. Not sure what is being caused when I have both a percentage discount and free shipping or how that would cause a negative integer.

Hi @digitalchild and @ben

It not a ‘the events calendar’ problem as it often works with the events calendar tickets. Like I said this problem doesn’t happen every time. I did a test of a the events calendar ticket with a coupon I created and it worked fine, but customers and vendors are contacting me to describe the problem. Also, other people in this thread are having the same problem with simple products.

I created the coupons, I don’t give my vendors the ability to create products or coupons I do it for them.

Please let me know if you want me to try anything else.

Mat

Hello All,

Just to let you know, after 10 hours of debugging I’ve located where the issue lies, I just need to work out how to fix it. Thought I would give you an update so you’re not left hanging. It’s not the stripe plugin at all but how pro is calculating commissions.

Will update when it’s fixed.

cheers,

Jamie.

Hi @digitalchild

That’s awesome, thanks Jamie. Sorry I didn’t get back to you sooner on those questions earlier I don’t work on this full time and didn’t get chance.

Cheers,
Mat

Hi Mat,

Coupons are not supported in Free……. 🙁 It’s a Pro-only feature…..

Correct. The coupons will just break things because there’s no code to tell the commissions what to do when a coupon is applied, such as deduct it from admin commissions, or deduct it from vendor commissions, etc….

I am still receiving this issue. I gave a customer a coupon code for $50 off this morning and free shipping since they already paid me in cash for the product and I just wanted them to “purchase” through the site so they could review the products and take out of inventory. They can’t complete checkout because of the following error: Invalid non-negative integer.

Any ideas?

Hello everyone,

A. I am testing the coupons and received the same error at the checkout. Please find below the scenarios:
-I have in my basket three different products from three different vendors
-I have a coupon code for each product (the coupon codes was created on each vendor dashboard/coupons)
-If I apply all three coupons for the same basket, I receive this error when I press buy now (I am using stripe plugin in test mode)
-If I remove a coupon (randomly) I still have the same error at the checkout
-If I leave only one coupon code it works and I can proceed with the payment
In order to see which coupon or product causes the error, I try to buy each product individually in separate transactions and applied the correspondent coupon for each product. All payments were successful.
-I tried to add only two products from two vendors in the same basket and applied the coupons and all payments were successful (e.g.: product 1 from Vendor A with Product 2 from Vendor B; Product 2 from Vendor B with product 3 from vendor C, etc)

I would appreciate if you can explain me if I am doing something wrong. Maybe I am missing something…

B. Also, a bit off topic ish:
-When setting up a coupon and tick the box to “allow free shipping”, should this option cancel the shipping fee for that specific product? E.g: if a product by default has a $5 shipping fee and I create a coupon code of $1 discount and tick “allow free shipping2, the coupon doesn’t cancel the delivery fee. It applies only -$1 for the product price. Is this how it should work?

Best,
Stefan

Stefan @cakecompare ,
– For the coupons… if you switch to the WC Vendors test Gateway and run an identical transaction to the first one and the last one (all vendor coupons..) do you still receive the error? (I am assuming you receive the non-negative integer error…)

– What are the coupons (percent, flat amount?)?

For the second question w/ free shipping vs coupons …. This is a bug that has been fixed and the fix will be in our next release, WC Vendors Pro v1.4.0

@cakecompare
That helps- thanks. It sounds like it may be Stripe related, since the error does not occur when you use the test gateway.
I will submit this issue and when Jamie can get to the Stripe work he can look into this, and contact you if he has further questions or needs more information to debug this issue.

@cakecompare ,
No- I do not know when Jamie will be able to get to working with Stripe. Right now he is trying to get our next release ready and all of the changes forced upon us by this WooCommerce update. That’ll happen in about a week- then after that he may be able to work on Stripe.