Hello,
There is no direct conversion from Inventory Item to Fixed Asset in BC by standard.
You will have to do a couple of entries to achieve this.
1. Do Negative Item Journal entries on the Inventory Items. You may want to consider creating a separate Gen. Prod. Posting Group for a cleaner approach.
Otherwise, it will post to the GL account stated on the item's Gen. Prod Posting Group Inventory Adjmt. Account.
2. Create ten fixed assets separately. You can use the 'Copy Fixed Assets' function to speed up the process.
3. Create Acquisition entries on Fixed Asset G/L Journals and make sure the Bal. Account No. is tied to the step#1 Inventory Adjmt. Account.