SM58 : Internal error when accessing a table

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Hi there,

We have just upgraded from R/3 4.7 to ECC 6.0. After the upgarde we face many "Internal error when accessing a table" in sm58. Is there any table mapping mismatched happened during unicode conversions? How to check the details? Most of the errors are SWW_WI_EXECUTE_INTERNAL_RFC, SWW_WI_CREATE_VIA_EVENT_IBF and etc which are workflow modules.

can you help?

Thanks.

Regards,

Thava