diff --git a/TranslatorReasonerAPI.yaml b/TranslatorReasonerAPI.yaml
index 614ce1e..e6756e9 100644
--- a/TranslatorReasonerAPI.yaml
+++ b/TranslatorReasonerAPI.yaml
@@ -926,11 +926,16 @@ components:
             MANY means that member CURIEs MUST form one or more
             sets in the Results, and sets with more members are generally
             considered more desirable that sets with fewer members.
-            If this property is missing or null, the default is BATCH.
+            Only when there are no ids provided, set_interpretation MAY be
+            set to COLLATE to indicate that multiple matching nodes MUST be
+            collated into a single Result, rather than separated into
+            separate Results. If this property is absent, the default is
+            BATCH.
           enum:
             - BATCH
             - ALL
             - MANY
+            - COLLATE
         member_ids:
           type: array
           description: >-
@@ -938,7 +943,7 @@ components:
             field MUST be populated under a set_interpretation of MANY
             or ALL, when the 'ids' field holds a UUID representing the set
             itself. This field MUST NOT be used under a set_interpretation
-            of BATCH.
+            of BATCH or COLLATE or when set_interpretation is absent.
           minItems: 1
           items:
             $ref: '#/components/schemas/CURIE'