Hi, Im having and issue in v17; this  workflow work great in V16 and V16.4.

I will simplified the work flow for explanation

0. Product "1"  with serial, in "all" Category with fifo and  Inventory Valuation: Automated. Locations: with Fifo strategy

1. I have 3 WH: A,B and C

2. Made a Puchase for Product "1" with lot/serial and send it to WH A. 

3. Internal transfer from WH A to WH B. There is a Route "B to C" with rule Push to; so every product transfered to B will be foward to C. I made this to have a receipt in WH C for landed costs

4. Validate receipt in WH C with serial number

5. Try validate landed cost to with transfer " WH A receipt" but odoo show  a message 

Invalid Operation

You cannot apply landed costs on the chosen Transfers(s). Landed costs can only be applied for products with FIFO or average costing method.

**NOTE** : If i try this with a product without serial numbers it works.

Hope can help me