It is recommended that you install the latest SPAM version and use the latest versions of tp and R3trans before the installation. In addition, you must also refer to the special note created for every add-on. In this case, any necessary recommendations that apply to Support Package queues with CRTs have priority over generally available notes for Support Packages queues.
2. Can several Add-ons be installed simultaneously?
There is no general answer to this question. It depends on the add-on. In general, PI can be used with all add-ons, although add-ons cannot be installed at the same time as each other. You should also refer to the note on installing the relevant add-on in particular.
3. Can I delete an add-on again?
In the case of some add-ons (for example, YEAR2000), you can either delete it ‘passively’ during an R/3 upgrade or you can use a relevant deletion request which is included in the upgrade. However, in general, add-ons can no longer be deleted. For more information, see note 33040.
4. What is the difference between a CRT and an add-on patch (AOP)?
A CRT eliminates conflicts between the add-on and R/3.A conflict means that objects were delivered via R/3 Support Package R/3 that were also delivered via the add-on in another form. These objects are overwritten when you import the standard Support Packages and the add-on is therefore inconsistent. For this reason, these objects must be adjusted so they are compatible with the add-on. This adjustment is carried out with CRTs, while add-on patches are packages that only contain objects which correct add-on errors. For more details, see note 160168.
5. Where can I find add-on patches or CRTs?
CRTs and add-on patches are only available in the SAP Service Marketplace (http://service.sap.com/patches).
6. Can I import a collective CRT for Support Packages whose queue does not comply with the standard recommendation together with the Support Packages?
The queue specified by the add-on generator has priority over the notes mentioned in the OCS notes for the different releases (for example, for Rel. 4.6 note 173814).Usually none of the collective CRTs used to correct conflicts with Support Packages should have a queue that cannot be imported at the same time.
7. Can I install an add-on even though the number of component Support Packages installed is higher than the number than the number actually required in the add-on installation instructions?
In this case, check whether CRTS are required and available for Support Packages (over shooters) that are imported over and above the description. If these CRTs are available, you can install the add-on, but you must also incorporate the CRTs.However, the add-on cannot be installed if the CRT required for the highest Support Package already imported has not yet been released.
8. Can I include CRTs or AOPs for an add-on in the upgrade?
Yes, this is possible as of target release 46C SR2.
9. Can I switch from any PI-version to the latest version?
No, since delta transports are involved with PI, you must follow the procedure step by step. For example: Initial version PI 2001_1_, target PI 2002_1_; Link:=> PI 2001_2_ => PI 2002_1_<REL
For more details on PI and its upgrade link, see the Service Marketplace at http://service.sap.com/r3-plug-in.An upgrade matrix and possible links for an R/3 upgrade including PI are also available here.
SAP Basis Administrator 