Upgrade MDM 5.5 portal content from SP6 to MDM 7.1

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Symptom
After upgrading the MDM Server and its repositories from MDM 5.5 SP6 to MDM 7.1, the portal MDM iViews show runtime errors.
Other terms
MDM 5.5 55 7.1 7.10 710 SP6 SP06 Upgrade iView portal content UWL Universal Worklist Workflow
Reason and Prerequisites
Reason
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The version of portal content must match the version of back-end MDM Server.
The mapping of portal user to repository user does no longer work.
Prerequisites
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1. Portal shows content still running on MDM 5.5 SP6.
The MDM portal content can be originated from the shipped SAP MDM portal content, or any custom portal content developed on top of the shipped SAP MDM iView Templates.
Hint: it is necessary to make sure the MDM 5.5 SP6 iViews (and UWL, if used) are operational and show content originated from MDM 5.5 SP6 [...]

MDM Portal Content deployment fail – MDM 7.1 SP02

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Symptom
You are trying to update your MDM Portal content or the MDM Java API to MDM 7.1 SP02 Patch03 or a higher version and receive the following deployment error:
SDM has not calculated any deployment actions.
Possible reasons:
All selected archives have already been deployed before in the same or in a higher version.
Other terms
MDM, Portal, SRM-MDM, Content, SCA, SDM, JSPM, MDM_JAVA_API
Reason and Prerequisites
MDM Portal Content BP Application and BP Technology SCA files and the MDM Java API SCA have a SAP_MANIFEST.MF file in each of them. Because of a technical issue, the SAP_MANIFEST.MF files from earlier versions of these SCA files (7.1 SP02 P00 and P01) have the “release” property set to “7.10″ instead of “7.1″. This is why the JSPM and the SDM tools [...]