Not getting sales in getOrderMetrics API using SKU

[qaisher]

Hi,

I'm using the following endpoint to retrieve sales data for SKUs:
GET /sales/v1/orderMetrics

{{baseUrl}}/sales/v1/orderMetrics?marketplaceIds={{marketplaceId}}&granularity=Day&sku=sku1&interval=2024-10-29T00:00:00Z--2025-02-10T00:00:00Z

When I pass only the ASIN in the parameters, I receive the correct sales count and other details. However, when I pass only the SKU for the same product, all values return as zero for all dates.

What could be causing this discrepancy, and how can I resolve it?

Thanks!