The Stall service is useful for preventing situational
errors that you anticipate may occur. This service provides the
capability to stall the branch that it belongs to.
For example, processes can use data that is provided from an
external resource, such as a partner's database. An Execute Script
action can be used to verify that the data is valid. If the data
is not valid, a Stall action can be executed that stalls the process
instance while the data in the database is corrected.
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