Magento 2.3.4 - Order don't get Recorded in Admin

Question

1 Magento 2.3.4

2 PHP 7.3

3 Braintree Gene 4.0.4

4 Default Onepage Checkout

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Is there a magento developer who can help me? We have newly upgraded to magento 2 website. I am facing issues with order and payments. Which I never faced in M1

With the below order number, the order never got recorded in magento nor I received a confirmation email. But braintree deducted the payment.

1000002100

With the below order numbers, the amount,details and sku are same. Braintree processed this as three separate orders and deducted the payment thrice.

1000002094, 1000002095, 1000002096

The order increment is getting skipped. Please check the screenshot, and further details can be provided.

Screenshot

https://prnt.sc/u0oxz6

This is a serious issue, still pending in Magento 2. Please look into the matter, and suggest what can be done.

Answer 1

Thanks very much for your reply Sumit in my case (Stores > Configuration > Customers > Persistent Shopping Cart) is disable

Answer 2

1. The increment id is assigned on the customer quote as column name reserved_order_id,

2. The working flow of placing order.

• Client click place order
• Magento reserved an order increment id by using sequence_order table
• Update the newest record into the current quote.
• Place the order and save the order if the process is succeeded.
• If not throw an error and keep the reserved order id at the quote.
• At the next time will use the reserved id to place order again ignore getting newest increment id

Sometime you will see the order's increment id is not ordered.