emit event false trigger recursively inside in asynchronous validators-angular recative forms

I have using reactive form and form have 60 fields. so I have written asyncvalidtors for server-side validation.

Note: Not using value changes mechanism.it works with below two line

   formGroup.ProductId.setErrors(null, { onlySelf: true, emitEvent: false });
     formGroup.ProductId.updateValueAndValidity({ onlySelf: true, emitEvent:false}); 

Problem with Validators Mechanism

I have faced an issue in the following scenarios. In async validators, I have use case if productName control is valid and set error null for productId fields.i have set the errors, and while perform updateValueandValidity send another request to the server .

if(result.controlName =='ProductName' && result.Validation==true){

// if control Name is productName // set Errors as Null for  Product ID

formGroup.ProductId.setErrors(null, { onlySelf: true, emitEvent: false });
 formGroup.ProductId.updateValueAndValidity({ onlySelf: true, emitEvent: false });
//But it recursively call  while perform this line


}

validators

 export class SomeAsyncValidator {
       static createValidator = (someService: SomeService) => (control: AbstractControl) =>
           timer(500)
               .pipe(
debounceTime(2000)
                // If previous query is different from current
                , distinctUntilChanged(),
                   map(() => control.value),
                   switchMap((name) => someService.exists({ request })),
                   map(() => ({
    
    if(result.controlName =='ProductName' && result.Validation==true){
    
    // if control Name is productName // set Errors as Null for  Product ID
    
    formGroup.ProductId.setErrors(null, { onlySelf: true, emitEvent: false });
     formGroup.ProductId.updateValueAndValidity({ onlySelf: true, emitEvent: false });
    //But it recursively call  while perform this line
    
    
    }
    
    })),
                   catchError(() => of(null)));
    }