Info Structure - Warning Message

Dear Gurus,

I have create a copy from S076 and create my own info structure S601.

my characteristics are Sales organization and Material and key figure are Sale, Net price and Net value.

While saving the info structure following yellow message is coming.

"Warning: Inconsistencies may occur when units updated => please check

Diagnosis

The characteristics you have chosen could lead to inconsistencies in the updating of the units.

Example:

The information structure does not contain a characteristic that clearly indicates the currency in which data is to be updated (for example, the sales organization); furthermore, the currency itself is not a characteristic of the information structure. If documents in differing currencies are now updated to the statistics, this can cause the system to add different values together in a data record.

Procedure

There are two possible ways you can guarantee that updating is consistent:

1. Add a field to your information structure that clearly identifies the unit, or add the unit itself as a characteristic.
2. Make sure that only documents which clearly refer to a unit are created.

I cant understand what i should do, so that this will resolve, as while i am using mc61 and save the document system terminate the update.

please suggest, with thanks.

regards,

imran khan