In the D365 voyage editor, partial addition of TO or PO line is possible to add to voyage.

Example:

• TO line qty = 10
• Voyage editor: Transfer quantity = 5

This results in:

• PO --> delivery schedule
• TO --> new TO line

But when performing this via:

• ITMTransferLinesEntity
• ITMPurchaseLinesEntity

You receive following error

A row created in data set LandedCostTransferLines was not published. Error message: 'Write failed for table row of type 'ITMTransferLinesEntity'. Infolog: Error: Voyage lines quantity does not match the transaction quantity for line 5,00 on Transfer order receive..'

Conclusion: TO or PO line split is not possible via data entity