Schema & PCR Full Details

[saphr]

Wage Type Processing Basic Concepts

Relationship of Payroll Driver, Schema (Functions), Rules (Operations)

Each country payroll version supported by SAP has a program called the "payroll driver" that calculates payrolls. For example, in the ffice:smarttags" />U.S., the payroll driver is RPCALCU0, in Mexico it is HMXCALC0, and in Canada RPCALCK0. Each one is different, but they share a common core of functionality. The job of the payroll driver is to process payroll functions as specified in a payroll schema. These payroll functions each perform a specific job, for example - reading data from infotypes, calculating taxes, and processing wage types. Some functions process payroll rules. Rules are a collection of payroll operations. Each operation does a small unit of work, such as multiplying a wage type’s number by a rate to get an amount.
Schemas are edited with transaction PE01, and rules

Figure 1 – Processing relationships

with PE02. Functions and operations are maintained with transaction PE04. To view payroll results,
use transaction pc_payresult (or in earlier R/3 releases go to Tools>Payroll result>Display in the Payroll menu). (See Figure 1.)The standard payroll schema for a country can be derived from table t500l. If the country in table t500l has an X in the Old Naming Conv field, then the schema is HR Country Indicator plus 000. Otherwise, it is the ISO Code plus 00. So the U.S. has schema U000 and for Mexico it is MX00.
Header and Table Wage Type Concept

When calculating payroll, wage types are read from infotypes and the Time Management cluster and stored in an internal table called the Input Table (IT). (See Table 1.) In ABAP terms, this is simply an internal table. Various payroll functions and operations can read and update data in this table. Similar to ABAP internal tables, there is a header row. That header row defines which row of data can be accessed by the payroll operations. After manipulating the data in the header row, you can save the row back to the IT, save it to another payroll table, or ignore it. In Table 1 there are three wage types, and wage type 2100 is currently in the header row. After you are done with wage type 2100, wage type 4200 is moved into the header row.