Allow synchronous reading communication during simulation

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Symptom
During the processing of an inbound simulation message via Process Agents, all synchronous outbound communication was interdicted with CM_SPAF_CALL_NOT_ALLOWED.
Other terms
PAF, Process Agent Framework
Reason and Prerequisites
The error message was raised as it cannot be assured that the simulation mode can be cascaded consistently so that the changes won’t have any effect on productive data.
The [...]

BRFplus: Simulation gives old result after changes activated

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Symptom
If two different sessions of BRFplus UI are opened and the top expression is edited in one session and the function simulated in the other, the simulation still returns the outdated results even after the changes in the top expression have been activated.
Other terms
FDT_WD_SIMULATION, RUN_SIMULATION, FDT, BRFplus, Simulation
Reason and Prerequisites
Program Error
Solution
Please implement the [...]