https://userapps.support.sap.com/sap/support/knowledge/en/3747447
3747447 - Payroll function P0014 does not process it0014 recurring allowance | SAP Knowledge Base...
The payroll function P0014 does not load or process a recurring allowance from IT0014 for for a partial-period scenario within the month (for example, 20.04 to...