3540221 - Line item validation error in Group Reporting "FINCS_ACCTG_INTEG100"

When running Line Item Validation in Group Reporting you receive the following error:

"Message no. FINCS_ACCTG_INTEG100"

"Item XYZ: Subitem ABC is not maximum selection DEF"

(XYZ represents the Item ID)

(ABC represents the Subitem value)

(DEF Represents the selection ID)

SAP S/4HANA Cloud Public Edition 

Data monitor, FINCS_ACCTG_INTEG100, posting level 0C, maximum selection, characteristic Subitem, characteristic value, subitem 999, Z-BC-TT-R, Z-BC-TT-A,  Define Selections App, maximum selection Z-BC-TT-A, document type, posting level, 0C (Adjustment Entry for Universal Document) , KBA , FIN-CS-COR-MON-2CL , Monitor (Public Cloud) , Problem