SAP Message RQ406 - Only the reference activities HRRES, HRPRE and HRCOM are allowed DOCUMENTATION DiagnosisThe following reference activities are used from the HR commitment togenerate earmarked funds documents:HRRES Funds reservationHRPRE Funds precommitmentHRCOM Funds commitmentHRBLK Funds blocksThe first three are relevant for Cash Management. Funds blocks are notupdated in Cash Management.