Want to know the difference among the sap standard schemas TM00/TM01/TM04

Question

hi, experts
i have read the standard courses HR310 and HR311,but i am still confused about the difference among the three standard TM schemas TM00,TM01 and TM04.
  i only learn from the book about it as follows:
  TM00: Time evaluation with time events
  TM01: Time evaluation for work schedule deviations
  TM04: Time evaluation for times entered as hours.
i want to know the details about different forms of time data and different strategies in evaluating the time data in the three standard schemas.
   thanks in advance

Answer 1

Hi,
TM01: read the actual data, Automatically calculate the overtime with the help of events.
TM04: Negative time evaluation, Get the data from the Work schedules
TM01: Positive/Negative time evaluation: Read the exception of workschedules, get the data from the time events form the 2011IT.
TM01:
Schema TM01 can be used for time evaluation if you only record
exceptions to the work schedule, and not all times that count as working
time (actual times).
You can use schema TM01 to import and process time data that has been
recorded online.
The schema forms time balances, time wage types, and time quotas, and is
processed using the time evaluation driver, RPTIME00.
The valuation basis for time evaluation forms a planned pair, which is
generated according to the planned specifications in the employee's
personal work schedule.
The planned pairs generally correspond to the time worked. Only
attendances from infotype 2002 and absences from infotype 2001 result in
a difference between planned and actual.
Schema TM01 automatically generates overtime for all attendance times
recorded over and above the planned specifications in the personal work
schedule. If overtime is recorded in infotype 2005, it can be approved
systematically taking account of overtime breaks.
TM00:
Schema TM00 processes time events that have been recorded at a time
recording terminal, or the time pairs formed from the time events in
pair formation. Attendances and absences are also imported.
Schema TM00 is based on positive recording of time data, that is,
recording all times that count as working time (actual times).
Schema TM00 only evaluates time data with clock times (or full-day
records). The main task of schema TM00 is to classify the actual times
by comparing them to the planned specifications in the daily work
schedule (start and end of planned working time, core times, breaks, and
so on).
TM04:
The time worked by the employee is recorded in the Attendances infotype
(2002), and not as clock-in and clock-out times. When processing
clock-in/out times, the emphasis is on the length of time between the
postings and not on the times at which the postings were made.
You can use schema TM04 to process attendances and absences that specify
a number of hours only, rather than concrete start and end times.
The times stipulated in the daily work schedule are not relevant. Only
specifications such as planned hours and minimum daily working time are
evaluated from the daily work schedule.
TM04 caters both for negative time recording (recording of exceptions to
the work schedule) and positive time recording (recording all
attendances or actual times).
If negative recording is used, the planned hours are generated on the
basis of the daily work schedule. Recorded absences and some attendance
times are deducted (see schema TP01.)
The "Time Management status" indicator in the Planned Working Time
infotype (0007) shows whether all actual times are recorded for an
employee, or only exceptions to the planned specifications.
Regards:
Devi.