diff --git a/lightbeam/api.py b/lightbeam/api.py
index f3ba6f2..27a062c 100644
--- a/lightbeam/api.py
+++ b/lightbeam/api.py
@@ -21,6 +21,7 @@ def __init__(self, lightbeam=None):
         self.lightbeam = lightbeam
         self.logger = self.lightbeam.logger
         self.config = None
+        self.reports_identity = False
     
     # prepares this API object by fetching some of its metadata and
     # setting up data and objects for further use
@@ -239,6 +240,8 @@ def load_swagger_docs(self):
                         if not response.ok:
                             raise Exception("OpenAPI metadata URL returned status {0} ({1})".format(response.status_code, (response.content[:75] + "...") if len(response.content)>75 else response.content))
                         swagger = response.json()
+                        if '"x-Ed-Fi-isIdentity":' in response.text:
+                            self.reports_identity = True
 
                     except Exception as e:
                         self.logger.critical(f"Unable to load {endpoint_type} Swagger from API... terminating. Check API connectivity.")
diff --git a/lightbeam/delete.py b/lightbeam/delete.py
index 655c790..78d14e0 100644
--- a/lightbeam/delete.py
+++ b/lightbeam/delete.py
@@ -54,8 +54,10 @@ async def do_deletes(self, endpoint):
         tasks = []
 
         # determine the fields that uniquely define a record for this endpoint
-        params_structure = self.lightbeam.api.get_params_for_endpoint(endpoint)
-
+        interpolation_type = 'required'
+        if self.lightbeam.api.reports_identity: interpolation_type = 'identity'
+        params_structure = self.lightbeam.api.get_params_for_endpoint(endpoint, type=interpolation_type)
+        
         # for Descriptors, we need to fetch all Descriptor values first, then we can look up the ID for deletion
         if endpoint.endswith('Descriptors'):
             self.logger.info("fetching current descriptors from endpoint {0} ...".format(endpoint))