SSAS : How to handle #Error in Mdx or in calculated measures + IsError()

when we are developing certain measures where there is no data at present but we need to create that measure now . For example  i need to create a Measure which calculate succeesRate of a particular application called Wx .

CREATE MEMBER CURRENTCUBE.[Measures].[Wx SR]
AS IIf([Measures].[SuccessRate] > 0,([Measures].[SuccessRate],([Application].[Application].&[Wx])),null),
FORMAT_STRING = "Standard",
VISIBLE = 1 , ASSOCIATED_MEASURE_GROUP = 'DRA Rate Count';

As there is no data for that application we will get  when we Query that measure we will get the result as  #Error

To handle this error in mdx we need use the Function IsError()
Syntax:
MEMBER [KPI Value] As iif(IsError(KPIValue("Wx SR")),0,KPIValue("Wx SR"))

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