JSPM Does Not Display Packages from Inbox Directory 
JSPM does not display the packages that you have placed in the global EPS inbox directory.
The packages are:
Not valid or have not been downloaded successfully
With a lower or equal support package level
For an older release
For a software component that is not currently deployed on the system.
For NWDI development and contain no deployable content
For more information about the validity of the files which JSPM has detected in the global EPS inbox directory, see the last JSPM_MAIN_<xx>.LOG and SCAN_INBOX_<xx>.LOG files.
Download the packages again. For more information about SAP products, see SAP Service Marketplace at service.sap.com/swdc.
Download only packages with a higher support package level.
You can check the support package level of the components that are deployed on the system (see Viewing the Deployed Components).
You can check the support package level of the packages that are downloaded in the global EPS inbox directory. The name of each package has the following syntax: <Name_xx_x>.SCA, where xx is the support package level and x is the patch level.
Download only packages for the current release level.
Deploy the software component (see Deploying New Software Components).