Item catogories in CRM and R/3 ?

Hi,

We have a Internet b2b sales scenario and are using CRM 4.0.

In R/3 backend -- under transaction VOV4 -- we have the following Item Categorie assignment to the Oder type.

sa type ITC GR USG H lev It Ca Df Itc M It Ca

ZEDE TEXT ZTXT

ZEDE BANS Z3RD ZTXT

ZEDE LEIS ZPTD ZTXT

ZEDE NORM ZTAN ZTXT

ZEDE NORM ZTAN ZTAN ZTXT

ZEDE NORM PSA1 ZOBS

ZEDE NORM PSA2 ZOBS ZTAN

ZEDE ZNRM Z3RD ZTXT

ZEDE ZTXT ZTXT

In CRM SPRO -- IMG -- CRM -- Transactions -- Basic settings -- Define Item category determination

ZEDE Parts EDI Std Order ZTXT General Text

ZEDE Parts EDI Std Order Third-party item Z3RD Parts 3rd Party ZTXT

ZEDE Parts EDI Std Order LEIS ZPTD Parts Service ZTXT

ZEDE Parts EDI Std Order Sales Item ZTAN Parts Sales Item ZTXT

ZEDE Parts EDI Std Order Sales Item ZOBS Parts Obsolete Item ZTAN Parts Sales Item

ZEDE Parts EDI Std Order Sales Item ZTAN Parts Sales Item ZTAN Parts Sales Item ZTXT

ZEDE Parts EDI Std Order Sales Text ZTXT General Text

As you see when you compare both the systems -- the usage is not defined in CRM and also the assignment is not similar to what we have in R/3. will there be any issues because of this -- esp with the order flow and Material substitution.

Do we need to have the item catageroy usage difined in CRM that way it is in R/3.

please so any one have any suggestions on this.

thanks and regards

vasu..