System Error with Hierarchy in Integrated Planning Input Hierarchy

Hi,

We wish to insert hierarchies into our input-read query. When the Characteristic Selections are pure single values the query works fine.

However when we use a hierarchy in the selection we get the following error in BEx and the system disconnects:

Program error in class SAPMSSY1 method: UNCAUGHT_EXCEPTION

Errors while reading InfoProvider data

Error reading the data of InfoProvider IMPM_01A2

System error in Program CL_RSR_RRK0_HIERARCHY and form

APPLY_SLICER_NODE-01

Running a 'Check' in the BEx Query Designer does not bring up any issues. We are on Support Package 9, Front-End Patch 1 Revision 321.

Many thanks,

R