Failure: Related External ID: Cannot lookup a property on a null value, Reason: Value referenced in the sub-expression

[NAl]

Hi all,

I am trying to conduct an upsert operation on a child record in Salesforce.
I have defined the External ID for the record and the related object but keep receiving this message:

Failure: Related External ID: Cannot lookup a property on a null value, Reason: Value referenced in the sub-expression

The null-safe access has been checked in each of the mapper snaps.

[Supratim]

NAl:

the External ID for the record and the related object but keep receiving this message

@NAl Looks like even through you have defined external id, it is evaluating as null value from snap. Is that hardcoded value ? If not just double check your expression (=) is enable for external id field or not.

[NAl]

Hi there, the External Id isn’t hardcoded. In the output preview, there is a valid value

[jlandells]

Can you post a screenshot of the expression, please?

[NAl]

sure,