Unable to READ SAP HR1nnn tables after 9.1 upgrade

Hi @All,

 after upgrade from 8.1.x to 9.1.1 we are no longer able to sync any HRP1nnn infotype. We got the following exception and log:

**** Log file opened by process 10944 at 2023-11-02 08:40:17 (UTC+01:00 Central Europe Standard Time)

SAP .NET Connector 3.0 with file version 3.0.20.0 running on 64-bit .NET Framework 4.0.30319.42000
Program: C:\Program Files\One Identity\One Identity Manager\SynchronizationEditor.exe
Working directory: C:\Program Files\One Identity\One Identity Manager
Operating system: Windows Server 2016 Standard Server 64-bit
Processor: 8x AMD64 (or x64)
SAP release: 721, Kernel release: 721, Kernel patch level: 1011
Hostname: XXX, IP address: XXX IP_v6 address:

Default trace level: None

>> Error entry 2023-11-02 08:40:17.620 [Thread 1]
[POOL_SIZE=1 POOL_IDLE_TIMEOUT=600 NAME=10944BASE_SAPRFCAPI IDLE_TIMEOUT=600 ASHOST=XXXCLIENT=XXX LANG=DE SYSNR=XXX USE_SAP_CODEPAGES=6100,6200,6300,6500 USER=XXX PASSWD=********]
SAP.Middleware.Connector.RfcAbapRuntimeException: Beim Parsen einer dynamischen Angabe trat ein Fehler auf.
at SAP.Middleware.Connector.RfcConnection.ThrowRfcErrorMsg()
at SAP.Middleware.Connector.RfcConnection.ReadBytes(Byte* buffer, Int32 count)
at SAP.Middleware.Connector.RfcConnection.ReadRfcIDBegin(Int32& length)
at SAP.Middleware.Connector.RfcConnection.ReadUpTo(RFCGET readState, RfcFunction function, RFCID toRid)
at SAP.Middleware.Connector.RfcConnection.RfcReceive(RfcFunction function)
at SAP.Middleware.Connector.RfcFunction.RfcDeserialize(RfcConnection conn, IRfcIOStream stream)
at SAP.Middleware.Connector.RfcFunction.RfcCallReceive(RfcConnection conn, IRfcIOStream stream, RFCID rid)
at SAP.Middleware.Connector.RfcFunction.Invoke(RfcDestination destination)

Error analysis on SAP side:
Exceptiontype CX_SY_DYNAMIC_OSQL_SEMANTICS
Error: 'FIELD "SY-" is unknown."

all other infotypes can be read without any error

any ideas are welcome, thank you

Gregor

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