Charge Account in Purchase Distributions

Hi All,

In Purchase Order Distrbutions how chage account defaulted  for bot destination type Expense and Inventory and from where it will pick?

Can we do custome for chnage account?

If any changed made to charge account for both expense and inevntory from where we can see those details?

If PO created from Auto Create through requisitions how chage accounts will copied?

For my client chage account at Item/Oraganization/Sub inventory is same but defaulted to PO distributions is diffrent?

Regards

Venkat