.update() does not work and returns null

[Yuriy7]

Often fails to update the record fields

var req_parent = new GlideRecord('sc_req_item');

req_parent.get(current.request_item.sys_id)

req_parent.state = 3;

// then I try to update the record

var req_id = req_parent.update();

gs.log("##### For " + req_parent.number + " - success. ID of the updated record: " + req_id);

This code does not work in a small number of cases (maybe 1-5%)

In the log, I see this message:

"##### For RITM4756385 - success.  ID of the updated record: null"

Although in most cases I see the return value here - the sys_id of records.

Who faced something similar? What diagnostics can be done to identify the cause?

[Yuriy7]

Hello! I think the record is always there, because in the logs I see its correct number req_parent.number, for example "RITM4756385"

[asifnoor]

Since you are calling update on the existing record, the sys_id of the record does not change. In this case, ou can access the sys_id of your request directly by accessing req_parent.sys_id instead of req_id.

[paulmorris]

Existing or not, the update function returns null if the update is not successful (according to the system documentation).
That is the only information we care about.

[Yuriy7]

But the problem is not that I am not getting sys_id, but that the record is not updated by the command

.update()

[asifnoor]

Did you check the logs. If the update is failing, then you shall see an error in the error log.