@ismbr() causing a validation error in EPBCS but is OK on 11.1.2.4 version

Summary:

Member formula using @ismbr() is generating an error in EPBCS but OK on the on-premise 11.1.2.4 version. Application in both environments are BSO.

Validation error in Member formula generates the error:

An error occurred while validating the member formula.

Error compiling formula for [calc-expression, at or after line: [" if( @ismbr( "[BON_INCENT].[62012]" ))"]] (line 2): unknown member name ["[BON_INCENT].[62012]"] in function [@ismbr]

Content (required):

Member formula error

Version (include the version you are using, if applicable):

11.1.2.4 versus EPBCS

Code Snippet (add any code snippets that support your topic, if applicable):

if( not ( @ismbr("FY22") or @ismbr("FY23") ))

if( @ismbr("62012") )

 .... ;

 endif;

else