Symptom:
When scheduling an update to a web service through ESM, a user cannot edit the scheduled update.
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Problem:
Clicking on the Edit option for a scheduled update to a web service from within ESM results in an error.
This can be seen from the Web Services page when clicking to the Web Service Actions display, which will list upcoming actions.
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Solution:
Update ESM to version 5.6 or higher.
Alternatively, the workaround is to delete the scheduled update and create a new scheduled update with the date/time desired.
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Unable-to-Edit-Web-Service-Scheduled-Update-in-ESM-1.pdf