• Part Alternate Link

◦ Introduced the ability to create part alternate links between an existing part and an alternate.

◦ Introduced the ability to modify an existing part alternate link.

◦ Introduced the ability to delete an existing part alternate link.

• Part Substitute Link

◦ Introduced the ability to create a part substitute link between an existing part usage link and a substitute.

◦ Introduced the ability to modify an existing part substitute link.

◦ Introduced the ability to delete an existing part substitute link.

• Part Describe Link

◦ Introduced the ability to create a part describe link between an existing part and a document.

◦ Introduced the ability to modify an existing part describe link.

◦ Introduced the ability to delete an existing part describe link.

• The TwoWay property and AlternatePart navigation property for the PartAlternateLink entity have been changed to “Required” for the newly introduced API, POST /Parts('<OID>')/Alternates. Previously these properties were nullable but are now set as Nullable="false". While this is a breaking change from an OData schema perspective, it should not cause any breakage at the client side as the underlying Windchill data model never allowed null values.

• The SubstitutePart and SubstituteFor navigation properties for the PartSubstituteLink entity have been changed to “Required” for the newly introduced API, POST /Parts('<OID>')/Substitutes. Previously these properties were nullable but are now set as Nullable="false". While this is a breaking change from an OData schema perspective, it should not cause any breakage at the client side as the underlying Windchill data model never allowed null values.