Union of 2 streams make 1 stream values all null

[ShantanuDagar]

Hello,

I have 2 data streams coming in which I am doing union on using manually configure fields.

1 data stream has 190 records. Other has 10 records.

After union, 190 rows are null while just 10 are filled with records while all previous 190 were filled up too.

Can't figure out what the issue is as it's running perfectly fine for all other flows.

[Felipe_Ribeir0]

Hi @ShantanuDagar 

It seems to me that your manual configuration is not correct. Are you sure that the position of the columns is correct? Example:

INPUT 1:

ColumnA

a

INPUT 2:

ColumnB

b

Wrong position config will generate rows with nulls:

Correct config: