some bw doubts

Dear BW Gurus,

1. The [Preview] button in the infopackage's external data tab is disabled for flatfile upload. Can you suggest the reason for this?

2. I tried to edit the hierarchy node data via PSA maintenance. When I save the changes, bw says invalid parameters entered. Pls advice why this is so. Seems that PSA maintenance does not allow changing before further update to data target.

regards,

Adette

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