One or more accounting distributions is missing a ledger account in Ax 2012

One or more accounting distributions error on ledger having temporary and permanent solutions for it. When you get this kind of error...

1. Temporary solution is to assign with in the line am going to show in Purchase requisition but this will applicable in all lines.
Go to > Purchase requisition lines or Purchase order lines > Financials button click on it then click on Distribute amounts.

After clicking on Distribute amounts and select the ledger account.

2. Permanent solution is Go to > Inventory management > Setup > Inventory > Item groups

After clicking on item groups select the item group, then click on Postings ledger posting form will appear click on Purchase order tab select the Purchase expenditure for expense click on Add in below line select the item code and account relation select the main account.