If not yet invoiced, delete the delivery by using Modification of issue option on the Shipment Detail lines. Then create a new delivery with the correct delivery date.

How do I get to the shipment detail lines? 

Please advise.

In Action button:

Is this an inter-site transfer that was already received by the other location?

It is marked as intersite. Yes.

In that case, in Purchase receipt - use Receipts modifs option on the Receipt Detail lines and delete the Receipt line(s) and save.

The Modification of issue option will now be available on the Shipment Detail lines.

How would i go about for the sales delivery. These dates are wrong on the delivery 

Delete the delivery by using Modification of issue option on the Shipment Detail lines and re-create the Delivery with correct delivery date.

same issue on the action box no modification of issues 

Did you use Receipts modifs option on the Receipt Detail lines (Purchase receipt)?

what needs to happen on this screen Please advise

Set it to 0.00 to cancel(reverse) the Delivery.

I am getting the following errors. This is after i set the amount to be shipped to ZERO and saved.

The period is closed. Set it Open and save again.

I was able to delete them. 

Thank you so much for your time and answers.

You're welcome. Happy to help!