MSS - Import cannot be resolved

Hello

I am new to the NWDS in regards to the MSS package.

I have loaded MSS in NWDI and I have created a project in NWDS for mss/cat/approval[sap.com]

I am able to see the entire project structure. When I go into FcCatapprove component I get errors.

I guess I need to add some jar files or a library but I have not been able to figure out which ones.

These Imports it cannot find

import com.sap.xss.hr.cat.approve.blc.wdp.IPrivateFcCatApprove;

import com.sap.xss.hr.cat.approve.model.approval.CatsApproval;

import com.sap.xss.hr.cat.approve.model.approval.Hrmss_Cat_Appr_Scenario;

import com.sap.xss.hr.cat.approve.model.approval.Hrmss_Cat_Wd_Approval_Input;

import com.sap.xss.hr.cat.approve.model.approval.Hrmss_Cat_Wd_Approval_Output;

import com.sap.xss.hr.cat.approve.model.approval.Hrxss_Cat_Rfc_Cell_Value;

I am using

NWDS 7.0

Portal NW 7.0 sp15

java 1.4.2_19

MSS 600

Any Help in this area would be appreciated.

Thank you,

Sarah