generating labels & packing box numbers

hello everybody,

the scenario is as under:

1. When the packing is to be done for the materials to be sent to customer, how can a label be generated. This label is to be pasted on the cylindrical box which is discussed in the following point.

2. The finished good is a cylindrical piece. first it is packed in cylindrical plastic boxes. Then depending upon the sizes of the cylindrical boxes (which ultimately depend on the size of the finished item), a specific number of such boxes are packed into a corrugated box. In SAP while carrying out packing (in this case mutli level) how can a specific number be generated for the corrugated box. This number should continue in a sequence for individual customers. i.e. for every customer number the box number should be different.