AX 2012 Purchase order invoice posting error

When I tried to post purchase order invoice on AX 2012, I got the following error message:

"Warning Posting\Purchase order: 000410\Item: 10001 Size=02 Inventory dimension Batch number must be specified.

Error Posting\Purchase order: 000410\Item: 10001 Size=02 Update has been canceled.

Error Posting An error occurred during update"

How and where can I specify the Inventory dimension batch number?

Can anyone send me AX 2012 purchase order & sales order processing manuals?

You can either do it by entering it directly on the line (if you have the dimension display set to visible for batch numbers) or from the registration process.

Manuals are on customersource or partnersource, you need to download them from there, showing you have rights.