topic RE: Why does Calc stage to write to nested collection field then report as an error in Product Forum

Why does Calc stage to write to nested collection field then report as an error

DT — Thu, 03 Dec 2020 01:12:00 GMT

I can write to nested collection field with a calculation stage, but error checker detects this as an error.
"Field 1.a does not exist in collection"
Even if collection (e.g. A) is single row collection with 2 feilds (e.g. A.1 & A.2) with nested single row collection (e.g. A.1.a & A.1.b)

I can use Collection Manipulation - Set Field action (without error) but not a quick and convenient as dragging the field from a collections field into calculation stage.

I am using v6.6
Is this just an issue in v6.6 ?
I don't recall this issue in prior versions.

RE: Why does Calc stage to write to nested collection field then report as an error

robert.nicklin — Thu, 03 Dec 2020 21:10:00 GMT

Hello Derek,

I've just checked as far back as 6.2.1 and can see this validation error back in that version as well, but I can't say for sure what version it was introduced in.

I believe that the issue causing this validation error was resolved in 6.7 under BG-3570, the release note for which reads:
Using a Calculation stage to write a value to a nested collection no longer causes a validation error.

I've just tested and can confirm that my process that gives this validation error doesn't generate the same error in Blue Prism 6.7 or later.

Regards,
Rob

------------------------------
Robert Nicklin
Senior Product Owner
Blue Prism
Warrington, England
------------------------------

RE: Why does Calc stage to write to nested collection field then report as an error

DT — Thu, 03 Dec 2020 21:30:00 GMT

Thanks Rob that's good news (when we get to v6.7+)
Thanks for the confirmation.
In the meantime I have changed all stages to use collection manipulation to have a clear error log

------------------------------
Derek
------------------------------