Hi Krishnan,
It is possible to compile a DI-API add-on in Any CPU mode to
work with both 32-bit and 64-bit clients. In order for it to work properly
please verify that 32-bit and 64-bit DI-API are installed and that the add-on is compiled with the 9.0 dll.
For further compatibility issues please see the Compatibility
Guide for Add-Ons in SAP Business One 9.0, after logging on to the SAP Partner
Edge you can access this file at this link: https://service.sap.com/~sapidb/011000358700000247582013E/SDK_CompGuide_90.pdf
Regards,
Daniel