3082178 - Unknown user accounts *#DI *#OO created in the HANA database after the S/4HANA Data Migration

Below user accounts (not limited to below only) have been generated on HANA database automatically without manual interaction.

You are wondering if any bad impact of this, and curious about the reason behind it.

FDT_CP_BR_SOURCE_*
FDT_CP_BR_SOURCE_*#DI
FDT_CP_BR_SOURCE_*#OO
FDT_CP_TEST_SMC_DATA_*
FDT_CP_TEST_SMC_DATA_*#DI
FDT_CP_TEST_SMC_DATA_*#OO
FDT_CP_TEST_SMC_DEPLOYMENT_*
FDT_CP_TEST_SMC_DEPLOYMENT_*#DI
FDT_CP_TEST_SMC_DEPLOYMENT_*#OO
FDT_CP_TEST_SMC_VIEWS_*
FDT_CP_TEST_SMC_VIEWS_*#DI
FDT_CP_TEST_SMC_VIEWS_*#OO
FDT_TEST_CONTAINER_GEN_2_*
FDT_TEST_CONTAINER_GEN_2_*#DI
FDT_TEST_CONTAINER_GEN_2_*#OO
FDT_TEST_CONTAINER_GEN_*
FDT_TEST_CONTAINER_GEN_*#DI
FDT_TEST_CONTAINER_GEN_*#OO
FDT_TEST_DATA_CONT_GEN_*
FDT_TEST_DATA_CONT_GEN_*#DI
FDT_TEST_DATA_CONT_GEN_*#OO
SAPESH_RT_GEN_*
SAPESH_RT_GEN_*#DI
SAPESH_RT_GEN_*#OO
SAPS4H_RT_*
SAPS4H_RT_*#DI
SAPS4H_RT_*#OO
SAPS4H_RT_GEN_*
SAPS4H_RT_GEN_*#DI
SAPS4H_RT_GEN_*#OO
SAPTMF_RT_*
SAPTMF_RT_*#DI
SAPTMF_RT_*#OO

...

HANA database with XS Advanced modeling

HDI,HDI container, HDI users, #DI,#OO,_RT,_DT , KBA , HAN-DB-SEC , SAP HANA Security & User Management , BC-CTS-HTA , SAP HANA object transport for ABAP , HAN-DB-DI , SAP HANA DI (HDI): diserver, HDI plugins& client libs , How To