Has anyone else faced this issue?

I created a shipment of 120 units and shipped the full quantity. However, Amazon only received 97 units, and the remaining 23 units were lost.

Usually, when Amazon loses inventory, they allow an investigation after the shipment status is closed. I provided proof of ownership, an invoice, and product images, and they typically reimburse after that.

But this time, their response was different, and I’m confused about why.

Please share your suggestions or experiences.

Hello from Amazon Selling Partner Support,

Thank you for your patience while we investigated your shipment. We realize that a quick resolution is important to your business.

Our research shows that the 23 units of FNSKU XXXXC3V that you sent with shipment XXXXNX have arrived at our fulfillment center as an unexpected FNSKU when compared to your shipping plan. Unfortunately, we are unable to recover the physical inventory of the located item at this time, due to the error in shipment plan creation.

We are unable to reimburse or reconcile the discrepancies you have asked to investigate for these items because of the error.

As part of the FBA inventory reimbursement policy, you are required to send the exact items and quantities stated in your shipping plan.

Ask them evidence, video recording, photos, etc about the units arrived with wrong FNSKU.

(If you are sure you did good. )