Problem in transformation

Hi Gurus

I am working on BI 7.0 and when I create transformation I have the following message.

R<b>ule 5 (target: Z_REV): Target parameter 0008 is not being used</b>

<b>Rule (target field: Z_REV): No source field assigned</b>

<b>Rule 7 (target: Z_MPRICE): Target parameter 0010 is not being used</b>

<b>Rule (target field: Z_MPRICE): No source field assigned</b>

I have already created datasource but when I try to create transformation to load the data to cube from datasource ( just for testing ) all the CHAR are getting assigned correctly but when i try to assign key fig I am getting this errors.I am assigning the fields then also its giving me this errors.

is this a basis problem or some other issue?

pl help