Assembly processing

Dear all,

I have issue on assembly processing.

I have and standard coding mask used for assembly processing having the

Nomenclature as follows .AB.XXX-XXXXX

AB.DEF-00001

Now my sales order number is say 0000500001

Now the project will be created automatically as follows AB.001-00001

Because the letters DEF will be replaced by the sales order number from the right.

Now my sales order number is say 0000600001

Now the project should be created automatically as follows AB.001-00001

But as per this already a coding mask exits and system will not create the same coding.

Or will the system not create the sales order 0000600001 in this type of context

Can any one advise how the system will be have in this type of scenario.

Regards

Varaprasad