[A] If you have received more quantity than ordered then you can easily make the inward for the extra material.

[B] Open the inward page against the PO for which you have received the extra material and add that quantity in delivered now field.

[C] As you can see in the above image the PO quantity is 1000 Nos but I am able to generate inward for 1100 Nos.

[D] After creating GRN for this inward same quantity will be added in the inventory.

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