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Invalid CIO command display by SMPBIOS(Sync Group setting by CCS)

Hello TI members,

I use CCS5_5. And I validate SMPBIOS and I become SyncGropu and use it.

(The environmental details that I use, please watch an attached document.3365.CIO_Error.pptx

Then the following message will be displayed.Please tell me this cause and measures method.

Invalid CIO command (28) in the CIO buffer at address (0x80008968) was not recognized. Please check the device and program memory maps.
I cannot have conviction, but the following part may be related when I check MAP.

80008968    00000120     rtsv7M4_T_le_eabi.lib : trgmsg.obj (.bss:__CIOBUF_)