3698149 - Task chain fails when running the task object "data flow with input parameters" in Datasphere

A data flow with input parameters runs successfully when executed independently. However, when this data flow is incorporated into a task chain, the task chain fails to prompt for the input parameters. After executing the task chain, both the corresponding data flow and the task chain fail.

The task chain monitor logs the following error for the data flow: 
Graph failure: producer1 failed with the following error: [90004] Error parsing expression ["###" = ]: no viable alternative at input '<EOF>'.; group=default, message=Graph failure: producer1 failed with the following error: [90004] Error parsing expression ["###" = ]: no viable alternative at input '<EOF>'. 

 (Note: ### denotes the column name utilized with the input parameter.)

"Image/data in this KBA is from SAP internal systems, sample data, or demo systems. Any resemblance to real data is purely coincidental." 

SAP Datasphere

task chain issue, data builder, failure, schedule, scheduling , KBA , DS-DI-SCH , Scheduling and Task Chains , DS-DI-DF , Data Flow Runtime , Problem