You can set up a configurable lookup of type 'User defined list' to manually define the possible options in a field.

Standard procedure

1.	Go to Data quality studio > Setup > Configurable lookups.
2.	Click New.
3.	In the Configurable lookup ID field, type a value.
4.	In the Description field, type a value.
5.	In the Configurable lookup type field, select 'User defined list'.
6.	Click Save.
7.	Define the desired values for the configurable lookup.
	Expand the User defined list configurable lookup values section.
8.	Click New.
9.	In the Value field, type a value.
10.	In the Description field, type a value.