Link sales order & Invoice

How can i link Sales invoice with Sales order???

You can copy the sales order to the sales invoice. See https://www.manager.io/guides/7262. But what exactly do you mean by “link?”

i dont wana copy…i wanna link that means…the 2nd step will be link with a new invoice,that i can know this invoice is against that order…and which item is few or much than order

You do not seem to have tried what I suggested. If you copy a sales order to a sales invoice, the Reference number of the sales order is copied into the Order number on the sales invoice, clearly showing the link between order and invoice.

I do not know what you mean by this.

ok …dear…got that…thank you