Do I need more than one receptacle on a 17 foot kitchen wall with two doors?
I would install at minimum 3 duplex outlets for a kitchen counter of that length. One foot from each corner and one in the middle.
Depending on how it looks then I might do 4 duplexes. One foot from each corner and one 4-5 feet from each corner.
You will NEVER EVER say to yourself: &quot;Gosh, I wish I had fewer outlets!&quot;
The only code thing you need to look into is whether they all need to be GFCI protected and whether each duplex needs a dedicated circuit.

Update per your edit:
It's just a regular house wall so treat it as such.
I think the only applicable rules are &quot;within 6 feet of the doorway and within 12 feet of the previous outlet&quot;. You can have an outlet every foot if you wanted to.
I would go for 1-2 feet from each door and maybe one in the center of the wall.
You might still need to verify the GFCI ruling and/or dedicated circuit ruling since it is in a kitchen.