diff --git a/ui-ngx/src/app/modules/home/components/calculated-fields/components/dialog/calculated-field-dialog.component.ts b/ui-ngx/src/app/modules/home/components/calculated-fields/components/dialog/calculated-field-dialog.component.ts
index a8f64f7cec..edf7ad2990 100644
--- a/ui-ngx/src/app/modules/home/components/calculated-fields/components/dialog/calculated-field-dialog.component.ts
+++ b/ui-ngx/src/app/modules/home/components/calculated-fields/components/dialog/calculated-field-dialog.component.ts
@@ -32,7 +32,7 @@ import {
   OutputType,
   OutputTypeTranslations
 } from '@shared/models/calculated-field.models';
-import { noLeadTrailSpacesRegex } from '@shared/models/regex.constants';
+import { oneSpaceInsideRegex } from '@shared/models/regex.constants';
 import { AttributeScope } from '@shared/models/telemetry/telemetry.models';
 import { EntityType } from '@shared/models/entity-type.models';
 import { map, startWith, switchMap } from 'rxjs/operators';
@@ -50,15 +50,15 @@ import { Observable } from 'rxjs';
 export class CalculatedFieldDialogComponent extends DialogComponent<CalculatedFieldDialogComponent, CalculatedField> {
 
   fieldFormGroup = this.fb.group({
-    name: ['', [Validators.required, Validators.pattern(noLeadTrailSpacesRegex), Validators.maxLength(255)]],
+    name: ['', [Validators.required, Validators.pattern(oneSpaceInsideRegex), Validators.maxLength(255)]],
     type: [CalculatedFieldType.SIMPLE],
     debugSettings: [],
     configuration: this.fb.group({
       arguments: this.fb.control({}),
-      expressionSIMPLE: ['', [Validators.required, Validators.pattern(noLeadTrailSpacesRegex), Validators.maxLength(255)]],
+      expressionSIMPLE: ['', [Validators.required, Validators.pattern(oneSpaceInsideRegex), Validators.maxLength(255)]],
       expressionSCRIPT: [],
       output: this.fb.group({
-        name: ['', [Validators.required, Validators.pattern(noLeadTrailSpacesRegex), Validators.maxLength(255)]],
+        name: ['', [Validators.required, Validators.pattern(oneSpaceInsideRegex), Validators.maxLength(255)]],
         scope: [{ value: AttributeScope.SERVER_SCOPE, disabled: true }],
         type: [OutputType.Timeseries]
       }),
@@ -120,9 +120,18 @@ export class CalculatedFieldDialogComponent extends DialogComponent<CalculatedFi
   }
 
   get fromGroupValue(): CalculatedField {
-    const { configuration, type, ...rest } = this.fieldFormGroup.value;
-    const { expressionSIMPLE, expressionSCRIPT, ...restConfig } = configuration;
-    return { configuration: { ...restConfig, type, expression: configuration['expression'+type] }, ...rest, type } as CalculatedField;
+    const { configuration, type, name, ...rest } = this.fieldFormGroup.value;
+    const { expressionSIMPLE, expressionSCRIPT, output, ...restConfig } = configuration;
+    return {
+      configuration: {
+        ...restConfig,
+        type, expression: configuration['expression'+type].trim(),
+        output: { ...output, name: output.name.trim() }
+      },
+      name: name.trim(),
+      type,
+      ...rest,
+    } as CalculatedField;
   }
 
   cancel(): void {
diff --git a/ui-ngx/src/app/modules/home/components/calculated-fields/components/panel/calculated-field-argument-panel.component.ts b/ui-ngx/src/app/modules/home/components/calculated-fields/components/panel/calculated-field-argument-panel.component.ts
index 9d9614ba28..7e41f60968 100644
--- a/ui-ngx/src/app/modules/home/components/calculated-fields/components/panel/calculated-field-argument-panel.component.ts
+++ b/ui-ngx/src/app/modules/home/components/calculated-fields/components/panel/calculated-field-argument-panel.component.ts
@@ -17,7 +17,7 @@
 import { ChangeDetectorRef, Component, Input, OnInit, output } from '@angular/core';
 import { TbPopoverComponent } from '@shared/components/popover.component';
 import { FormBuilder, FormControl, FormGroup, ValidatorFn, Validators } from '@angular/forms';
-import { charsWithNumRegex, noLeadTrailSpacesRegex } from '@shared/models/regex.constants';
+import { charsWithNumRegex, oneSpaceInsideRegex } from '@shared/models/regex.constants';
 import {
   ArgumentEntityType,
   ArgumentEntityTypeParamsMap,
@@ -71,10 +71,10 @@ export class CalculatedFieldArgumentPanelComponent implements OnInit {
     }),
     refEntityKey: this.fb.group({
       type: [ArgumentType.LatestTelemetry, [Validators.required]],
-      key: [''],
+      key: ['', [Validators.pattern(oneSpaceInsideRegex)]],
       scope: [{ value: AttributeScope.SERVER_SCOPE, disabled: true }, [Validators.required]],
     }),
-    defaultValue: ['', [Validators.pattern(noLeadTrailSpacesRegex)]],
+    defaultValue: ['', [Validators.pattern(oneSpaceInsideRegex)]],
     limit: [{ value: this.defaultLimit, disabled: !this.maxDataPointsPerRollingArg }],
     timeWindow: [MINUTE * 15],
   });
@@ -142,6 +142,10 @@ export class CalculatedFieldArgumentPanelComponent implements OnInit {
     if (refEntityId.entityType === ArgumentEntityType.Tenant) {
       refEntityId.id = this.tenantId;
     }
+    if (value.defaultValue) {
+      value.defaultValue = value.defaultValue.trim();
+    }
+    value.refEntityKey.key = value.refEntityKey.key.trim();
     this.argumentsDataApplied.emit({ value, index: this.index });
   }
 
diff --git a/ui-ngx/src/app/shared/models/regex.constants.ts b/ui-ngx/src/app/shared/models/regex.constants.ts
index f0489060ef..66940017b2 100644
--- a/ui-ngx/src/app/shared/models/regex.constants.ts
+++ b/ui-ngx/src/app/shared/models/regex.constants.ts
@@ -14,6 +14,6 @@
 /// limitations under the License.
 ///
 
-export const noLeadTrailSpacesRegex = /^\S+(?: \S+)*$/;
+export const oneSpaceInsideRegex = /^\s*\S+(?:\s\S+)*\s*$/;
 
 export const charsWithNumRegex = /^[a-zA-Z]+[a-zA-Z0-9]*$/;