diff --git a/spec.bs b/spec.bs
index b71a8f9a8..b01c05006 100644
--- a/spec.bs
+++ b/spec.bs
@@ -2948,6 +2948,21 @@ The <dfn for=Navigator method>getInterestGroupAdAuctionData(|configIDL|)</dfn> m
 1. Let |p| be [=a new promise=].
 1. Let |queue| be the result of [=starting a new parallel queue=].
 1. [=parallel queue/enqueue steps|Enqueue the following steps=] to |queue|:
+  1. If |config|'s [=auction data config/coordinator=] is not one of the [=implementation-defined=]
+     coordinators supported by this [=user agent=]:
+     1. [=Queue a global task=] on the [=DOM manipulation task source=], given |global|, to
+        reject |p| with a {{TypeError}}.
+     1. Abort these steps.
+  1. Let |key| be a [=byte sequence=] containing one of the [[RFC9180|HPKE]] public
+     encryption keys that the coordinator corresponding to |config|'s [=auction data config/coordinator=]
+     associates with |config|'s [=auction data config/seller], or failure if no
+     key is available. The actual method for this lookup is
+     [=implementation-defined=], and may consist of fetching the keys from a known [=URL=].
+  1. If |key| is failure then:
+     1. [=Queue a global task=] on the [=DOM manipulation task source=], given |global|, to
+        reject |p| with a {{TypeError}}.
+     1. Abort these steps.
+  1. Set |config|'s [=auction data config/encryption key=] to |key|.
   1. Let |igMap| be a new [=map=] whose [=map/keys=] are [=origins=] and [=map/values=] are [=lists=].
   1. Let |startTime| be a [=moment=] equal to the [=current wall time=].
   1. [=list/For each=] |ig| of the [=user agent=]'s [=interest group set=]:
@@ -3031,14 +3046,6 @@ The <dfn for=Navigator method>getInterestGroupAdAuctionData(|configIDL|)</dfn> m
       |configIDL|["{{AdAuctionDataConfig/perBuyerConfig}}"]
   1. If |config|'s [=auction data config/seller=] or [=auction data config/coordinator=]
      fields are failure, then [=exception/throw=] a {{TypeError}}.
-  1. If |config|'s [=auction data config/coordinator=] is not one of the [=implementation-defined=]
-     coordinators supported by this [=user agent=], then [=exception/throw=] a {{TypeError}}.
-  1. Set |config|'s [=auction data config/encryption key=] to one of the [[RFC9180|HPKE]] public
-     encryption keys that the coordinator corresponding to |config|'s [=auction data config/coordinator=]
-     associates with |config|'s [=auction data config/seller]. The actual method
-     for this lookup is [=implementation-defined=], and may consist of fetching
-     the keys from a known [=URL=]. If the public key is not available, then
-     [=exception/throw=] a {{TypeError}}.
   1. If |config|'s [=auction data config/per buyer config=] [=map/is not empty=]
      and |config|'s [=auction data config/request size=] is null:
      1. Let |request_size| equal 0.