diff --git a/services/telemetrylink/oas_commit b/services/telemetrylink/oas_commit
index be073bf26..1538b64bb 100644
--- a/services/telemetrylink/oas_commit
+++ b/services/telemetrylink/oas_commit
@@ -1 +1 @@
-72230b88b02a415757a997174c27da16db266be6
+d5bd75f47f4b364fa6f71663efb4ba41ec703ac8
diff --git a/services/telemetrylink/v1api/model_create_or_update_folder_telemetry_link_payload.go b/services/telemetrylink/v1api/model_create_or_update_folder_telemetry_link_payload.go
index 435fb37f1..3cb875d27 100644
--- a/services/telemetrylink/v1api/model_create_or_update_folder_telemetry_link_payload.go
+++ b/services/telemetrylink/v1api/model_create_or_update_folder_telemetry_link_payload.go
@@ -23,7 +23,7 @@ type CreateOrUpdateFolderTelemetryLinkPayload struct {
 	// The access token.
 	AccessToken string `json:"accessToken" validate:"regexp=^[A-Za-z0-9-_=]+\\\\.[A-Za-z0-9-_=]+\\\\.?[A-Za-z0-9-_.+\\/=]*$"`
 	// The description is a longer text chosen by the user to provide more context for the resource.
-	Description *string `json:"description,omitempty"`
+	Description *string `json:"description,omitempty" validate:"regexp=^([a-zA-Z0-9][a-zA-Z0-9 \\\\-]*)?$"`
 	// The display name is a short name chosen by the user to identify the resource.
 	DisplayName string `json:"displayName" validate:"regexp=^[a-zA-Z0-9][a-zA-Z0-9 \\\\-]*$"`
 	// Indicates whether routing through the link to a telemetry-router is active.
diff --git a/services/telemetrylink/v1api/model_create_or_update_organization_telemetry_link_payload.go b/services/telemetrylink/v1api/model_create_or_update_organization_telemetry_link_payload.go
index 959f1ae7d..7a68c7195 100644
--- a/services/telemetrylink/v1api/model_create_or_update_organization_telemetry_link_payload.go
+++ b/services/telemetrylink/v1api/model_create_or_update_organization_telemetry_link_payload.go
@@ -23,7 +23,7 @@ type CreateOrUpdateOrganizationTelemetryLinkPayload struct {
 	// The access token.
 	AccessToken string `json:"accessToken" validate:"regexp=^[A-Za-z0-9-_=]+\\\\.[A-Za-z0-9-_=]+\\\\.?[A-Za-z0-9-_.+\\/=]*$"`
 	// The description is a longer text chosen by the user to provide more context for the resource.
-	Description *string `json:"description,omitempty"`
+	Description *string `json:"description,omitempty" validate:"regexp=^([a-zA-Z0-9][a-zA-Z0-9 \\\\-]*)?$"`
 	// The display name is a short name chosen by the user to identify the resource.
 	DisplayName string `json:"displayName" validate:"regexp=^[a-zA-Z0-9][a-zA-Z0-9 \\\\-]*$"`
 	// Indicates whether routing through the link to a telemetry-router is active.
diff --git a/services/telemetrylink/v1api/model_create_or_update_project_telemetry_link_payload.go b/services/telemetrylink/v1api/model_create_or_update_project_telemetry_link_payload.go
index f127ddc02..953f6e21b 100644
--- a/services/telemetrylink/v1api/model_create_or_update_project_telemetry_link_payload.go
+++ b/services/telemetrylink/v1api/model_create_or_update_project_telemetry_link_payload.go
@@ -23,7 +23,7 @@ type CreateOrUpdateProjectTelemetryLinkPayload struct {
 	// The access token.
 	AccessToken string `json:"accessToken" validate:"regexp=^[A-Za-z0-9-_=]+\\\\.[A-Za-z0-9-_=]+\\\\.?[A-Za-z0-9-_.+\\/=]*$"`
 	// The description is a longer text chosen by the user to provide more context for the resource.
-	Description *string `json:"description,omitempty"`
+	Description *string `json:"description,omitempty" validate:"regexp=^([a-zA-Z0-9][a-zA-Z0-9 \\\\-]*)?$"`
 	// The display name is a short name chosen by the user to identify the resource.
 	DisplayName string `json:"displayName" validate:"regexp=^[a-zA-Z0-9][a-zA-Z0-9 \\\\-]*$"`
 	// Indicates whether routing through the link to a telemetry-router is active.
diff --git a/services/telemetrylink/v1api/model_partial_update_folder_telemetry_link_payload.go b/services/telemetrylink/v1api/model_partial_update_folder_telemetry_link_payload.go
index de22f0665..d9a43239e 100644
--- a/services/telemetrylink/v1api/model_partial_update_folder_telemetry_link_payload.go
+++ b/services/telemetrylink/v1api/model_partial_update_folder_telemetry_link_payload.go
@@ -22,7 +22,7 @@ type PartialUpdateFolderTelemetryLinkPayload struct {
 	// The access token.
 	AccessToken *string `json:"accessToken,omitempty" validate:"regexp=^[A-Za-z0-9-_=]+\\\\.[A-Za-z0-9-_=]+\\\\.?[A-Za-z0-9-_.+\\/=]*$"`
 	// The description is a longer text chosen by the user to provide more context for the resource.
-	Description *string `json:"description,omitempty"`
+	Description *string `json:"description,omitempty" validate:"regexp=^([a-zA-Z0-9][a-zA-Z0-9 \\\\-]*)?$"`
 	// The display name is a short name chosen by the user to identify the resource.
 	DisplayName *string `json:"displayName,omitempty" validate:"regexp=^[a-zA-Z0-9][a-zA-Z0-9 \\\\-]*$"`
 	// Indicates whether routing through the link to a telemetry-router is active.
diff --git a/services/telemetrylink/v1api/model_partial_update_organization_telemetry_link_payload.go b/services/telemetrylink/v1api/model_partial_update_organization_telemetry_link_payload.go
index 3f4580bec..6e3f0a5fd 100644
--- a/services/telemetrylink/v1api/model_partial_update_organization_telemetry_link_payload.go
+++ b/services/telemetrylink/v1api/model_partial_update_organization_telemetry_link_payload.go
@@ -22,7 +22,7 @@ type PartialUpdateOrganizationTelemetryLinkPayload struct {
 	// The access token.
 	AccessToken *string `json:"accessToken,omitempty" validate:"regexp=^[A-Za-z0-9-_=]+\\\\.[A-Za-z0-9-_=]+\\\\.?[A-Za-z0-9-_.+\\/=]*$"`
 	// The description is a longer text chosen by the user to provide more context for the resource.
-	Description *string `json:"description,omitempty"`
+	Description *string `json:"description,omitempty" validate:"regexp=^([a-zA-Z0-9][a-zA-Z0-9 \\\\-]*)?$"`
 	// The display name is a short name chosen by the user to identify the resource.
 	DisplayName *string `json:"displayName,omitempty" validate:"regexp=^[a-zA-Z0-9][a-zA-Z0-9 \\\\-]*$"`
 	// Indicates whether routing through the link to a telemetry-router is active.
diff --git a/services/telemetrylink/v1api/model_partial_update_project_telemetry_link_payload.go b/services/telemetrylink/v1api/model_partial_update_project_telemetry_link_payload.go
index 849cca9dc..19a9f043d 100644
--- a/services/telemetrylink/v1api/model_partial_update_project_telemetry_link_payload.go
+++ b/services/telemetrylink/v1api/model_partial_update_project_telemetry_link_payload.go
@@ -22,7 +22,7 @@ type PartialUpdateProjectTelemetryLinkPayload struct {
 	// The access token.
 	AccessToken *string `json:"accessToken,omitempty" validate:"regexp=^[A-Za-z0-9-_=]+\\\\.[A-Za-z0-9-_=]+\\\\.?[A-Za-z0-9-_.+\\/=]*$"`
 	// The description is a longer text chosen by the user to provide more context for the resource.
-	Description *string `json:"description,omitempty"`
+	Description *string `json:"description,omitempty" validate:"regexp=^([a-zA-Z0-9][a-zA-Z0-9 \\\\-]*)?$"`
 	// The display name is a short name chosen by the user to identify the resource.
 	DisplayName *string `json:"displayName,omitempty" validate:"regexp=^[a-zA-Z0-9][a-zA-Z0-9 \\\\-]*$"`
 	// Indicates whether routing through the link to a telemetry-router is active.
diff --git a/services/telemetrylink/v1api/model_telemetry_link_request.go b/services/telemetrylink/v1api/model_telemetry_link_request.go
index e4aa15b4e..b80421eab 100644
--- a/services/telemetrylink/v1api/model_telemetry_link_request.go
+++ b/services/telemetrylink/v1api/model_telemetry_link_request.go
@@ -22,7 +22,7 @@ type TelemetryLinkRequest struct {
 	// The access token.
 	AccessToken *string `json:"accessToken,omitempty" validate:"regexp=^[A-Za-z0-9-_=]+\\\\.[A-Za-z0-9-_=]+\\\\.?[A-Za-z0-9-_.+\\/=]*$"`
 	// The description is a longer text chosen by the user to provide more context for the resource.
-	Description *string `json:"description,omitempty"`
+	Description *string `json:"description,omitempty" validate:"regexp=^([a-zA-Z0-9][a-zA-Z0-9 \\\\-]*)?$"`
 	// The display name is a short name chosen by the user to identify the resource.
 	DisplayName *string `json:"displayName,omitempty" validate:"regexp=^[a-zA-Z0-9][a-zA-Z0-9 \\\\-]*$"`
 	// Indicates whether routing through the link to a telemetry-router is active.