explain change number in MM01
can u explain the change number option in mm01
explain in steps
Number used to uniquely identify a change master record.
Engineering Change Management (LO-ECH)
Data record that contains all the information required
for managing a change.
A change master record contains descriptive data, such
as the reason for the change, and data with control
functions, such as valid-from date and indicators for
object types. In addition to this data, which you can
maintain directly, there is data that the system updates
automatically, such as administrative data.
If you make a change with reference to a change number, or create an
object with a change number, the following functions are at your
o The system determines the validity conditions
The conditions that the change is effective under can be defined in the
change master record as follows:
- Changes with a date validity (valid-from date)
- Changes with parameter effectivity (for example: serial no.
o Log of the changes made
o Documentation of the changes
o Assignment of a revision level to a change state of a material or
o Release of changes for the different areas in the company