I've recently had this issue and found a fix that doesn't involve having to delete and start from scratch again so thought I would share this to save others the same pain
- In NWDS open development infrastructure perspective
- Open the component properties for your BPM DC
- Click the dependencies tab
- Expand bie/sca/scdl/contributors/maas
- on the "def" node under this create a build time dependence
Build and re-deploy the DC and you should then get a green light in Application Communication in the SOA section of NWA
I've raised a customer message with SAP requesting a note is released for this and ideally for the build process to be modified to fail where the dependency isn't set and operation mappings are in the BPM project..