STEPS TO REPRODUCE:

1.Create a static custom lookup with ID

    LOOKUP_ABOVE_WATERLINE3

2.Note that there is an OOTB statis with ID

    LOOKUP_ABOVE_WATERLINE

3.Edit any dynamic type lookup, lets use the ID LOOKUP_RESURCES

4.Copy the query and create a new dynamic type lookup with ID LOOKUP_RESURCES3

5.Get your REST API documentation URL from Administration > System options > API

    example: http://myserver/niku/rest/describe/index.html

6.Under Other Resources expand the GET /lookups/{lookupType}/lookupValues call

7. On the lookupType parameter provide the lookup IDs mentioned initially: LOOKUP_ABOVE_WATERLINE, LOOKUP_ABOVE_WATERLINE3, LOOKUP_RESURCES and LOOKUP_RESURCES3

8. The custom and OOTB static lookups get the lookup values (LOOKUP_ABOVE_WATERLINE, LOOKUP_ABOVE_WATERLINE3, LOOKUP_RESOURCES):

9. Now try the custom dynamic lookup (LOOKUP_RESURCES3)

Expected results: To get the lookup values of LOOKUP_RESURCES3

Actual results: The lookup is not recognized and an API-1003 error is returned:

{

  "resourceId": "LOOKUP_RESOURCES3",

  "httpStatus": "404",

  "errorMessage": "API-1003 : Could not find resource LOOKUP_RESOURCES3.",

  "errorCode": "api.invalidResource"

}