RE: purchase service from vendor on campany's item
Hi
unless there is a country specific localisation for this (which I doubt), this process involves a few manual transactions.
1. You probably want to move items to a different location (let's call it PROCESS) when you 'give it to vendor', so it's not in your main warehouse anymore, and you can have specific setup for writing items off.
2. When item(s) are returned from vendor, you would need to create a fixed asset card and post the acquisition value (although this can be done later after the service invoice is received). This can be done using suspense GL account to balance (your purchase invoice for services will have to be posted to the same GL account).
3. Then you need to post the negative adjustment of your items from the PROCESS location
4. When you receive the service invoice the cost of FA might be adjusted using FA journals or posted at that particular time.
And you're done.
What you need to be aware are costs. Posting in step 2 and 3 have to balance out using correct setup. That is, when you write-off items from location PROCESS, the negative balance goes out of stock, and the positive has to go to specific GL (let's call it X). When you post the purchase invoice for service, post it to the same GL X. When balancing acquisition cost of the FA, use GL X and amount as 'costs of items + cost of service'. After this your GL X is balanced to zero, stock reduced by the cost of items, and FA acquisition cost is posted to GL as the sum of both.
Hope that makes sense.
Robertas