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The customer activates the AClicense on the official website and shows that the activation fails.
The field version is V7.1.070 Ess1103 version
The customer's version is too old. E1103 is a 2017 version. At that time, it should not be compatible with unified AC.
I loaded E1103 and the latest R6526 version, and compared the generated did file, they are not the same.
It is recommended that customers upgrade to the R6526 version, and then use the newly generated DID to activate and try.

It is recommended that customers upgrade to the R6526 version, and then use the newly generated DID to activate and try.