diff --git a/telephony/java/android/telephony/SubscriptionManager.java b/telephony/java/android/telephony/SubscriptionManager.java
index e1e1f8bbaaa26..586c815ae7b59 100644
--- a/telephony/java/android/telephony/SubscriptionManager.java
+++ b/telephony/java/android/telephony/SubscriptionManager.java
@@ -2745,6 +2745,8 @@ public class SubscriptionManager {
      *
      * @throws SecurityException if the caller doesn't meet the requirements
      *             outlined above.
+     * @throws IllegalArgumentException if any of the subscriptions in the list doesn't exist.
+     * @throws IllegalStateException if Telephony service is in bad state.
      *
      * @param subIdList list of subId that will be in the same group
      * @return groupUUID a UUID assigned to the subscription group.
@@ -2793,6 +2795,7 @@ public class SubscriptionManager {
      *             outlined above.
      * @throws IllegalArgumentException if the some subscriptions in the list doesn't exist,
      *             or the groupUuid doesn't exist.
+     * @throws IllegalStateException if Telephony service is in bad state.
      *
      * @param subIdList list of subId that need adding into the group
      * @param groupUuid the groupUuid the subscriptions are being added to.
@@ -2845,6 +2848,7 @@ public class SubscriptionManager {
      *             outlined above.
      * @throws IllegalArgumentException if the some subscriptions in the list doesn't belong
      *             the specified group.
+     * @throws IllegalStateException if Telephony service is in bad state.
      *
      * @param subIdList list of subId that need removing from their groups.
      *