Created an App flow to Load Data from S3 Bucket to salesforce Instance.
While mapping Standard Look Up fields AppFlow is using wrong syntax for field Mapping due to this I am getting Error while loading data .
Example : During Contact Upsert while relating contact record with Account using Account External ID, Appflow is using Syntax as “AccountID.AccountExternalField”, but it should be “Account.AccountExteranlField”.
Error Message :
[{"error":"[{"message":"Cannot deserialize instance of reference from START_OBJECT value { or request may be missing a required field at [line:1, column:149]","errorCode":"JSON_PARSER_ERROR"}]
