diff --git a/src/components/GiftedDialog.vue b/src/components/GiftedDialog.vue
index 04856244..754c9bf6 100644
--- a/src/components/GiftedDialog.vue
+++ b/src/components/GiftedDialog.vue
@@ -320,7 +320,7 @@ export default class GiftedDialog extends Vue {
         this.fromProjectId,
       );
 
-      if (!result.success || result.error) {
+      if (!result.success) {
         const errorMessage = this.getGiveCreationErrorMessage(result);
         logger.error("Error with give creation result:", result);
         this.$notify(
diff --git a/src/components/OfferDialog.vue b/src/components/OfferDialog.vue
index a66dd0f1..659488f1 100644
--- a/src/components/OfferDialog.vue
+++ b/src/components/OfferDialog.vue
@@ -249,10 +249,7 @@ export default class OfferDialog extends Vue {
         this.projectId,
       );
 
-      if (
-        result.type === "error" ||
-        this.isOfferCreationError(result.response)
-      ) {
+      if (!result.success) {
         const errorMessage = this.getOfferCreationErrorMessage(result);
         logger.error("Error with offer creation result:", result);
         this.$notify(
@@ -296,15 +293,6 @@ export default class OfferDialog extends Vue {
 
   // Helper functions for readability
 
-  /**
-   * @param result response "data" from the server
-   * @returns true if the result indicates an error
-   */
-  // eslint-disable-next-line @typescript-eslint/no-explicit-any
-  isOfferCreationError(result: any) {
-    return result.status !== 201 || result.data?.error;
-  }
-
   /**
    * @param result direct response eg. ErrorResult or SuccessResult (potentially with embedded "data")
    * @returns best guess at an error message
diff --git a/src/libs/endorserServer.ts b/src/libs/endorserServer.ts
index a6c3c9cd..40d38c6d 100644
--- a/src/libs/endorserServer.ts
+++ b/src/libs/endorserServer.ts
@@ -1315,17 +1315,29 @@ export async function createEndorserJwtVcFromClaim(
   return createEndorserJwtForDid(issuerDid, vcPayload);
 }
 
+/**
+ * Create a JWT for a RegisterAction claim.
+ *
+ * @param activeDid - The DID of the user creating the invite
+ * @param contact - The contact to register, with a 'did' field (all optional for invites)
+ * @param identifier - The identifier for the invite, usually random
+ * @param expiresIn - The number of seconds until the invite expires
+ * @returns The JWT for the RegisterAction claim
+ */
 export async function createInviteJwt(
   activeDid: string,
-  contact: Contact,
+  contact?: Contact,
+  identifier?: string,
+  expiresIn?: number, // in seconds
 ): Promise<string> {
   const vcClaim: RegisterVerifiableCredential = {
     "@context": SCHEMA_ORG_CONTEXT,
     "@type": "RegisterAction",
     agent: { identifier: activeDid },
     object: SERVICE_ID,
+    identifier: identifier,
   };
-  if (contact) {
+  if (contact?.did) {
     vcClaim.participant = { identifier: contact.did };
   }
 
@@ -1340,7 +1352,7 @@ export async function createInviteJwt(
   };
 
   // Create a signature using private key of identity
-  const vcJwt = await createEndorserJwtForDid(activeDid, vcPayload);
+  const vcJwt = await createEndorserJwtForDid(activeDid, vcPayload, expiresIn);
   return vcJwt;
 }
 
diff --git a/src/views/InviteOneView.vue b/src/views/InviteOneView.vue
index 18d66a3d..0ae150c1 100644
--- a/src/views/InviteOneView.vue
+++ b/src/views/InviteOneView.vue
@@ -324,7 +324,7 @@ export default class InviteOneView extends Vue {
           );
           await axios.post(
             this.apiServer + "/api/userUtil/invite",
-            { inviteJwt: inviteJwt, notes: notes },
+            { inviteIdentifier, inviteJwt, notes, expiresAt },
             { headers },
           );
           const newInvite = {
diff --git a/src/views/OfferDetailsView.vue b/src/views/OfferDetailsView.vue
index f5ef82cc..cfd7cc73 100644
--- a/src/views/OfferDetailsView.vue
+++ b/src/views/OfferDetailsView.vue
@@ -703,7 +703,7 @@ export default class OfferDetailsView extends Vue {
         );
       }
 
-      if (result.type === "error" || this.isCreationError(result.response)) {
+      if (!result.success) {
         const errorMessage = this.getCreationErrorMessage(result);
         logger.error("Error with offer creation result:", result);
         this.$notify(