The property item_number must be common to all sources or the property item_number has inappropriate data type

Solution: With poly items, each property called out in the poly item must exist in all of the item types added to it and have the same type in all of the item types

Ex: If you are adding Part, Manufacturer Part and Manufacturer as Poly Sources for Poly item.
Then you should delete Item_number, manufacturer_id and Name from properties under Poly Item.
Mean you should add properties which are common to all Poly Items

SharePoint 2013 Tabs using SPServices

Building a Registration/Sign Up Solution in SharePoint

SharePoint Online Pull values from a lookup column using SPServices()

SharePoint Change Order of form items in DispForm.aspx and NewForm.aspx

Open SharePoint Site
Go to the Custom List then Settings-->List Settings
In the settings page Under General Settings section--> Advanced Settings
Under "Content Types"
Select Radio button: Yes (Allow Management of content types-->click OK)
Go back to List Settings page
Under Content Types click on item
You will see: List Content Type page
You see: Column order
Click on "Column order"
Now change the column order

Cascading Drop down in SharePoint 2013 using SPServices

https://www.youtube.com/watch?v=_B8rV56-y1s#t=20