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material master

hi,

can any one tell me what is the use of change no found in the first screen of matrial master(MM01, MM02)?

Former Member
replied

Hello Mesto,

You can create a material with reference to a change number using two functions.

If you create a material with Create Immediately, the system creates a material master record immediately.

You can change the material immediately with reference to a change number whose valid-from date is not in the future. The changes you make are then valid with immediate effect (as of today’s date) or as of the date in the past.

There are revision levels for these materials.

If you create a material with Create Schedule, the system first creates a document (and no material master record). If you schedule the material with reference to a change number, the system takes the valid-from date from the change master record. The Valid-from date must be in the future.

The system does not create the material master record until the scheduled material is activated on the valid-from date of the change master record. The current date is set as the create date. You can then process this "real" material master record either with or without a change number.

If you schedule to create a material with reference to several change numbers, the system overwrites the existing organizational areas when it is activated.

As an example, you schedule a material with reference to the change number N1 and maintain data for engineering design and materials planning.

You then schedule the same material with reference to the change number N2 and maintain data for engineering design and storage.

You activate the material for the valid-from date of change number N1. If you activate the material for the valid-from date of change number N2, the engineering design data is overwritten. Only the state with reference to change number N2 is saved.

There are no revision levels for scheduled materials.

Change material

There are two functions that you can use to change a material with reference to a change number.

If you process a material with Change Immediately, then you can change the material with reference to a change number if the valid-from date is not in the future.

If you process a material with the function Change Schedule, then you can change the material with reference to a change number if the valid-from date is in the future.

You should then activate the scheduled change for the valid-from date of the change master record.

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