I am struggling to post a purchase invoice, there are two items purchased after entering them on the software, they don’t tally with the invoice value. The simple reason is because of approximation and unlike other software where the amount can be edited to enable the software compute the rate. This doesn’t allow me to do so. Please i need assistance on how to go about this.
I’m not really following your question. Are you saying you want to enter Total Amount and Qty and have ERPNext compute the Rate (Rate * Qty = Total Amount)?
There’s nothing like that out of the box, but you could probably set it up relatively easily with client scripts. I’d add a custom field to the purchase order items, called “item Total Input” or something, then use a field trigger and derive the rate from qty any time this custom field changed.