If you faced with the error
InvalidOperationException: CRM Parameter Filter – Invalid parameter .. , you have to disable the filter from regedit like below
Create a DWORD registry key named [DisableParameterFilter] under [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\MSCRM]
set the value to 1
do a iisreset,
this enable the url querystring parameter passing under CRM .
Finally you can pass your custom query string parameters during form opening.
Happy CRMing
Great information. Keep updating your blog.
Thanks
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