The word 'Null' appearing when clearing out the value within a field on an application service

[matthew_hughes]

On an application service record, the name field is made up of the Business Application Name and Instance Descriptor field:

What we've noticed is that if a user clears the Instance Descriptor field manually within the form, it updates the Name to just reflect the Business Application Name field as expected:

A user who doesn't have access to the application services table can carryout this amendment via a Data Only change request:

So a user can clear out the Instance Descriptor field and click Save Proposed Changes

Once the change record has been approved, the user can then click on the Apply Proposed Changes button:

However, what we've noticed is that when a user clicks on Apply Proposed Changes, the Instance Descriptor field does get cleared out as expected, but the Name field includes the word Null instead of just updating the Name with just the Business Application Name value:

The change is triggered by the following Business Rule:

The below code is from within the Advanced tab:

if (current.operation() == "update" && current.u_bus_app_name != '') {

        if (current.u_instance_descriptor.changes()) {

            if (current.u_instance_descriptor != '' && current.u_instance_descriptor != 'NULL') {

                gs.log("KM2 Instance Descriptor first block: "+current.u_instance_descriptor);

                current.name = current.u_bus_app_name.name.toString() + "_" + current.u_instance_descriptor;

            } else if (current.u_instance_descriptor == '' || current.u_instance_descriptor == NULL || current.u_instance_descriptor == 'NULL' || current.u_instance_descriptor == null || current.u_instance_descriptor == 'null'|| current.u_instance_descriptor == '_NULL') {

                gs.log("KM2 Instance Descriptor second block: "+current.u_instance_descriptor);

                current.name = current.u_bus_app_name.name.toString();

            }

        }

    }

[Ankur Bawiskar]

@matthew_hughes 

is that the same table on which business rule is created?

I assume it's not a dot walked field added on form via some other reference field?

What happens when business rule runs with admin?

[matthew_hughes]

@Ankur Bawiskar 

The same table on the Business rule is correct

It's not a dot walk field, it's a text field.

Do you mean when a Data Only change is raised via admin or when an admin manually amends the Instance Descriptor field within the Application Service?

[Ankur Bawiskar]

@matthew_hughes 

yes if system admin initiates the action and business rule runs? then what comes in log?

[matthew_hughes]

When I click 'Apply Changes' as admin via a data only change record, I don't get any results back. I only seem to get logs when I update the field manually:

[Ankur Bawiskar]

@matthew_hughes 

seems you are not able to access the field value itself?

Is that an encrypted field? any field level READ ACL is blocking?

share that field type screenshot from dictionary

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