Distribution not generated for item with zero PO price

Dear Community,

We had a POC where we put purchase price of an item is ZERO.

We received and Delivered that PO and can see Receipt accounting distribution with Zero line.

But can't see cost accounting distribution.

We are using Standard Costing method, just want to know is this standard functionality that zero cost item will not show or we are missing something.

Though i know system would have given error that "Standard cost does not exist" but i checked Costing Process error & Warnings i don't see this transaction there.

Can you please help me to clarify this.

Thanks,

Manish