Special characters as keys - Unicode BW system

Hello together,
we want to change our SAP BW System 3.5 to Unicode and afterwards we plan the upgrade to BI 7.0.
We found the OSS note which tells that characteristic keys (e.g. material number, customer number, brand key, country key) must be designed as 7-bit-US-ASCII characters (common characters), but we did not found any note about what happens if we dont convert these characters into 7-bit-US-ASCII and weve got some Infoobjects with special characters.
Do we really have to convert theses characters? What happens if we dont change these?
We used as well the customizing option ALL_CAPITAL. What does ALL_Capital mean at the Unicode-compliant BW system. Does it have the same function as before?
Thanks and regards,
Julia
Message was edited by:
Julia

It's a difficult matter that's made extremely easy with Unicode. But you're not there yet so you are stuck with code pages and these can get very messy.
I dealt with this with Asian languages but it was a long time ago. I do remember there was a white paper from SAP that explained all the possible scenarios and possible solutions. For downloads to Excel etc. you will have to convert to a windows code page or Unicode in your program.
[This SAP Help page|http://help.sap.com/saphelp_nw04/helpdata/en/9c/70023cfa699508e10000000a11402f/frameset.htm] might contain the mentioned document, I was unable to open it...
Good luck,
Gert.

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