How to handle the lock competition error when using Connect Developer tool Generic API Loader?

[Yong]

How to handle the lock competition error when using Connect Developer tool Generic API Loader?

Error in the log: 

ns1:Errors><ns1:Code>LOCK_COMPETITION</ns1:Code><ns1:Message>Operation failed due to a lock competition, please retry later.</ns1:Message></ns1:Errors>

[Yong · Accepted solution]

When creating the task, please go to tab Advanced, set the Max zObjects: 25, Max Threads: 1. The overall process will be slower but the lock competition error will not happen.