Before importing current assets, make sure that you have created the required ledgers under Chart of Accounts > Assets > Current Assets group.

How to import details of current assets :

1. Go to: Accounting > Masters and Accounts > Journal Entry > New.
2. Enter Posting Date.
3. Select the appropriate current asset ledger in the Account column and enter the value in Debit.
4. Select 'Temporary Opening' ledger in Account and enter the balancing amount in Credit.
5. Set 'Is Opening' to Yes.

To know about Journal Enter in detail, visit this page