Dropship for Expense Items

Our Customer doesnt have stockable inventory. They will get the Order from Customer and raise a PO asking Supplier to send the material to Customer directly.

In this scenario, can expense item be used in dropship cycle?

I tried a scenario, where in I am getting error in requisition import process.

Error:

14002 CHARGE_ACCOUNT_ID Charge account is invalid

  Cause: The charge account that

  you entered is invalid.

  Action: Enter a valid charge

  account.

  PROJECT ACCOUNTING If Oracle Projects is installed and

  PROJECT_ACCOUNTING_CONTEXT is 'Y', then

  project, task, expenditure type,

  expenditure item date and expenditure

  organization must be valid