Problem: How to record a sale of a part of a fixed asset that is accounted for as a whole, but consists of several parts.
Solution: In order to record a sale of a part of a fixed asset that is accounted for as a whole, but consists of several parts,
you need to do the following:
1. Write off fixed assets completely.
Go to Accounting – Fixed Assets.
Create a Fixed asset Write-off document. 
A write-off involves removing the asset from accounting and posting additional expense
if the accumulated depreciation amount is less than the initial cost.
On this tab, you can enter general information about the fixed asset write-offs.
Note that the required fields are: Correspondence, Department, Business Activity, Expense item, and Entity.
See also 12.2.7. Fixed Asset Write-Offs
2, Inventory receive with the Net book value amount.
Go to Warehouse – Inventory Receipts.
Create an Inventory Receipts document.
Enter the 3 components of the written-off fixed asset.
The Main tab provides general information on an Inventory Receipt.
The required fields on this tab are Warehouse and Entity.
See also 5.3.2. Inventory Receipts
In the Item column create a new item. For more details, refer to items.
Fill in the column's quantity, price, amount.
3.Create fixed assets in parts.
Go to Accounting – Fixed Assets.
Create new fixed assets and take them into account.
Fill in the fields: Description, type, and class.
See also 12.1.1.1. Adding a Fixed Asset
On this tab, enter information about an inventory item that is a fixed asset.
See also 12.2.1. Fixed Asset Entries
Generate a report to check your actions.
4. Sell that particular part to have the correct sales profit or loss.
Create a fixed asset sales document.
Go to Accounting – Fixed Asset Sale.
See also 12.2.5. Fixed Asset Sales
On this tab, enter general information about the sale of fixed asset-company, contract and legal entity.
On this tab, specify the fixed asset being sold.
Generate a report to check your actions.
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# disposal fix assets sale in parts