A processing chain is a process of automating the loading of data. It cannot be used to load local data, mainly to record the problems encountered. Make a long post to look for.
Describe the basic operation.
Basic operation:
1 Find the corresponding processing chain and click it 
. Start monitoring.
2 Monitor the processing chain and display messages.
The message interface is being displayed, where basic errors can be seen. So as to modify according to the error message.
Display the JOB in the background and view the settings of the workflow.
The basic operation ends.
Duplicate key value problem:
It is said that there is data duplication, and DTP reports an error. Nor is it a question of status. Can't figure it out. Because of DTP settings.
Go to the corresponding DTP, check the handle duplicate key value.
