SAP Program RC1XREGE - EHS: Convert validity area 'REG_EG' to 'REG_EU'

Description
This program converts the validity area key 'REG_EG' to the new key'REG_EU' in tables TCG91, TCG92, TCG93, TCG98, ESTDU, ESTLP, and ESTLV.
The program can be reset. This means that it can be repeated any numberof times.