How to delete Manufacturer Part

Go to Sourcing
Manufacturer Part
Search for "Manufacturer Part"
Delete
If you are getting any error then Manufacturer Part has used in some parts.

Right click on "Manufacturer Part", click "Where Used"
You will get all part numbers..
Now go to parts
Search for "part" which used Manufacturer Part
Open part
Click on elated changes
Click on ECO
Open ECO
Lock ECO
Under Affected Item
Select all Affected Items
delete
Save
Now go to Manufacturer Part
Delete