Understanding Alternative Blend IDs

You can use the Blend ID Method To field in the Edit Operation Configuration form of the Setup Configured Operations program (P31B75P) to set up a rule that specifies how the system copies the blend ID for the After To lot. The system uses the blend rule to copy the blend ID to subsequent lots when you perform certain blend operations. The system uses the same blend rule from the Setup Configured Operations program to copy the alternative blend ID, if one exists, to subsequent lots when you perform a move operation. Because the alternative blend ID is user-defined instead of system generated, the system uses the blend rules differently for the alternative blend ID than it does for the blend ID.

This table describes how the system copies the blend ID and alternative blend ID from lot to lot based on the blend rules that exist for the configured operation:

Blend ID Method To	Copy Blend ID	Copy Alternative Blend ID
Copy After From Before	The system copies the blend ID from the Before lots to the After lots.	The system copies the alternative blend ID from the Before lots to the After lots.
No Default	The system does not copy the alternative blend ID to the After lots.	The system does not copy the alternative blend ID to the After lots.
Generate New	The system generates a new blend ID based on the rules that you set up in the Setup Blend ID program (P31B50).	Not applicable. Because the alternative blend ID is user-defined, the system does not generate a new alternative blend ID when you perform a move operation.
Largest contributing lot	The system copies the blend ID from the Before lot from which the largest quantity is moved or retained.	The system copies the alternative blend ID from the Before lot from which the largest quantity is moved or retained. Refer to the examples in this section for details about how the system copies the alternative blend ID when the largest contributing lot is a From vessel, a To vessel, or both a From and To vessel contribute the same largest quantity.

Note: You can manually enter an alternative blend ID to override the value that the system copies from one lot to another. Access the Instruct Lot Attributes form to manually enter or change the alternative blend ID. If you manually enter an alternative blend ID for the after lot before you perform the move operation, the system does not copy the alternative blend ID from the before lot. Instead, the system retains the manually entered value.