Upload payroll lines

POST https://api.sandbox.flowpayroll.ai/v1/payroll/line/{employeeId}

Uploads a list of payroll lines to the system. The system will attempt to process each line and return a list of validation issues for any lines that fail. The successful lines will be returned in the response. The combination of employeeID and id must be unique. There's a hard limit of 100 items per request. In addition to the input data, the response contain an additional field 'payrollDate' - which corresponds to the date that will be considered for the payroll process. The payrollDate will always be populated - either with the date in the input - or with the very next yet unlocked date, in case the period for the given date is already locked. On HMRC submission, the system will use the date as reference to the period.