Failed to save modifications to thew server

[ask]

Hi,

I am writing a DAX query into Tabular Cube.  It keeps returning the errors:  Failed to save modifcations to the server. Error returned: " A table of multiple values was supplied where a single value as expected.

Devices:=Calculate([Total Device], ALLEXCEPT('Codes','Codes'[A]),filter('Codes','Codes'[A]<>BLANK())))

Anyone could help out? Basically not just for this query. It will return the same error whever I write. Even I just copy the old query in, it will return the same error.  Thanks in advanced

[v-huizhn-msft]

Hi @ask,

Please share the formula of measure [Total Device] and more details. You must calculate [Total Device] based on different code, please create some fake data for further analysis.

Best Regards,
Angelia