Mapping profile - transformations - process item material type

As a librarian exporting inventory data I would like to have records contain the item material type so that items information is appended to inventory instance records when exporting in the MARC format

Scenario 1:
Given: the item material type has associated transformation
When: the inventory instance record has an inventory item record with populated materialTypeId
Then: the value associated with the key stored in materialTypeId is used to populate fields as specified in the transformation and the MARC fields are appended to MARC bib record

Scenario 2:
Given: any field associated with the item electronic access has associated transformation
When: the inventory instance record has an inventory item record without materialTypeId or there is no item record associated
Then: the mapping is skipped and no fields are appended to the MARC bib record

Scenario 3:
Given: the items material type field has associated transformation
When: the instance record has associated an item record with an invalid materialTypeId
Then: the mapping is skipped and the error is logged and the error contains: instance HRID, item HRID and invalid material type id.