"For Each" OOB Function Failing in Subflow for MRVS

[ajhsdgj]

Hi,

I am working on a subflow where I need to loop through each value in a Multi Row Variable Set (MRVS) using the out-of-the-box For Each function. This works fine in the main flow for the same catalog item and MRVS, but in the subflow I get this error:

Error: Cannot convert null to an object.,Detail: Cannot convert null to an object., errorCode:1

I have tried different troubleshooting steps and checked the ServiceNow Community but could not find a solution. The documentation says For Each should work with MRVS in flows.

Can anyone help me with this? I tried parsing the value and then using it, I got the same error. This is how the MRVS looks like the following.

Thanks in Advance!

{
    "Create Policy": [
        {
            "action": "allow",
            "application_inspection": "icmp",
            "destination_group": null,
            "destination_ip": "2.2.2.2",
            "destination_security_zone": "any",
            "group_rules_by_tag": "Mainframe",
            "rule_name": "Ak_test1",
            "service_service_group": null,
            "source_group": null,
            "source_ip": "1.1.1.1",
            "source_security_zone": "any",
            "update_policy": false
        },
        {
            "action": "deny",
            "application_inspection": null,
            "destination_group": "ansible_test1",
            "destination_ip": null,
            "destination_security_zone": "any",
            "group_rules_by_tag": "Mainframe",
            "rule_name": "Ak_test2",
            "service_service_group": "tecp-123",
            "source_group": "ansible_test1",
            "source_ip": null,
            "source_security_zone": "any",
            "update_policy": false
        },
        {
            "action": "allow",
            "application_inspection": "icmp",
            "destination_group": "ansible_test1",
            "destination_ip": "5.5.5.5, 6.6.6.6",
            "destination_security_zone": "any",
            "group_rules_by_tag": null,
            "rule_name": "Ak_test3",
            "service_service_group": "tcp-123",
            "source_group": "ansible_test1",
            "source_ip": "3.3.3.3, 4.4.4.4",
            "source_security_zone": "any",
            "update_policy": false
        }
    ]
}

[Ankur Bawiskar]

@ajhsdgj 

please share some screenshots.

If my response helped please mark it correct and close the thread so that it benefits future readers.

[ajhsdgj]

Sure!

[Ankur Bawiskar]

@ajhsdgj 

I could see you are getting the catalog variable from catalog task?

Is that true?

I will suggest to pass the MRVS data from main flow to this subflow as input.

If my response helped please mark it correct and close the thread so that it benefits future readers.

[ajhsdgj]

The subflow is getting called from ITOM framework through mapping. 
I changed the selection from catalog task to RITM and again tested the flow. I got the same error.
We are using ITOM process and we have added mapping for automation enabled. This subflow is created to run the automation for one of the requirement. The subflow is not directly getting called from the catalog flow but from Mapping flow. We can get info about the RITM and Catalog from that. I compared the value of the MRVS in both catalog flow and the automation subflow, it is same.

[Ankur Bawiskar]

@ajhsdgj 

are you able to get MRVS value in subflow?