diff --git a/smp-angular/src/app/service-group-edit/service-group-details-dialog/service-group-details-dialog.component.html b/smp-angular/src/app/service-group-edit/service-group-details-dialog/service-group-details-dialog.component.html
index 80e5cab3daa714f8c1665ef8ab9c9db7e630fa94..8d9b403761f97bc2b713316bd0876f6a06015123 100644
--- a/smp-angular/src/app/service-group-edit/service-group-details-dialog/service-group-details-dialog.component.html
+++ b/smp-angular/src/app/service-group-edit/service-group-details-dialog/service-group-details-dialog.component.html
@@ -38,7 +38,7 @@
               *ngIf="(!editMode && dialogForm.controls['participantScheme'].touched || editMode) &&
                dialogForm.controls['participantScheme'].hasError('pattern')"
               style="color:red; font-size: 70%">
-              Participant scheme must be up to 63 characters long. The Scheme Identifier MUST take the form [domain]-[identifierArea]-[identifierType] (ex.: 'busdox-actorid-upis') and may only contain the following characters: [a-z0-9]+-[a-z0-9]+-[a-z0-9]+.
+              Participant scheme must be up to 25 characters long. The Scheme Identifier MUST take the form [domain]-[identifierArea]-[identifierType] (ex.: 'busdox-actorid-upis') and may only contain the following characters: [a-z0-9]+-[a-z0-9]+-[a-z0-9]+.
             </div>
           </mat-form-field>
           </div>