Hi Lothar,
the error message means that some of the necessary physical indexes don't exist on the TREX side
when the application tries to create the Join ESH:EP3100~EP3100~CLES_CLF_AENR~~$PV , or the attributes definied in the physical indexes don't match with the attribute definitions in the Join.
As it's very difficult to find out the exact reason of such issue without to check your system directly I would like to ask you to create an OSS incident for this issue.
Best regards,
Mikhail