a6bb6589_seUS_Todo_Backup__online_help___Meaning
[Error Codes] 0X*****250 [Error Codes_2] 0X*****439 [Meaning_3] Failed to end Exchange storage database recovery. [Meaning] 
Invalid length of filtering constraint, please recreate current task (plan).
Error Code list of EaseUS Todo Backup- online help.
Meaning