Hi Sangeeta,
Very well documented question, thank you for that.
In addition/complement to André's suggestion, you should check the Order type, if your EDI sales order are coming in as 'Sales Journal', they would excluded from planning (no transactions).
What's bizarre is that you say it worked with Legacy Master Planning. Once they are in D365, it should not matter the manner in which the sales order are created, so something is causing the transactions (if there are) to be ignored.
To my knowledge, unposted confirmation does not matter but that could be easily enough confirmed.
What comes to mind:
- Sales order Header : Order type "Journal"
- For a Warehouse with "Manual coverage" enabled.
- Item with Item coverage "manual" (overriden?)
- Product Lifecycle State excludes item from Planning
- Missing data on sales line:
- Missing Dimension with "Coverage Plan by..." (look at Storage Dimension or Tracking Dim Gp)
- If Product Master, missing Production dimension (style, size...)
When you update Net Requirements for the Item, do you have any error message?