Error when we try to submit a Process Mass Change current task

Summary:

Error when we try to submit a Process Mass Change current task

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Hi,

we went into My Client Groups -> Performance -> Process Mass Actions for Performance Documents. Then we clicked on Add and on Change current task. We filled in the Mandatory fields (Review Period; Performance document; Current Task; New Current task) and we entered the Employee name whose performance document had to be moved from the Current task to the New current task. However when we clicked on Submit a pop-up appeared with the following message: "A system error occurred when trying to call the enterprise scheduler service. Contact your help desk. (PER-1531570)" (see the screenshot 'ERROR_PROCESS_MASS_CHANGE_CURRENT_TASK.PNG'). The issue is not