2938483 - Warning message: "Personnel number XXXXXXXX: User stored in IT0105 subtype 0001 but does not exist." - PAOCF_EC_USER_TOOL006 or HRSFEC_USER_TOOL006

You run the report PAOCF_EC_ESS_USER_UPDATE, in SAP OnPremise installation, or report HRSFEC_ESS_USER_UPDATE in a Employee Central Payroll one, and face the following warning message in transaction SLG1 (object HRESS):

Personnel number XXXXXXXX: User stored in IT0105 subtype 0001 but does not exist. - Message No. PAOCF_EC_USER_TOOL006 (if SAP OnPremise installation) or HRSFEC_USER_TOOL006 (if Employee Central Payroll One).

"Image/data in this KBA is from SAP internal systems, sample data, or demo systems. Any resemblance to real data is purely coincidental."

PAOCF_EC_ESS_USER_UPDATE; HRSFEC_ESS_USER_UPDATE; PAOCF_EC_USER_TOOL006; HRSFEC_USER_TOOL006; ESS user; IT0105-0001; IT0105; PA0105; USR01. , KBA , LOD-EC-INT-EE , Employee Integration EC to ERP On Premise , LOD-EC-GCP-PY , Payroll Integration EC to Employee Central Payroll , LOD-EC-GCP-PY-EDR , Employee Data Replication , Known Error