BPA applies rules based on the rule order that you define for each supplementary data source. The assignment engine in BPA begins with the first rule and searches until it finds a match. You can change the order of the rules at any time.
If no match is found for a particular supplementary data source, the rules for the supplementary data source None are checked until a match is found. The Default Invoice Rule applies if no other matches are found.
To reorder rules, select the Primary Data Source of the rules to reorder and click Reorder Rules available on the Assignment Rules page. Use the shuttleboxes for online bills and printed bills to change rule order. The Supplementary Data Source LOV will be set to None in case of a Balance Forward Billing template. If an external template is assigned to a rule, then the rule appears only in the Print Bill Available Rules shuttlebox.
Note: If you register a supplementary data source that has the same interface context as a seeded data source, then BPA will apply the rules created for the custom data source before the rules associated with the seeded data source.
In other words, the assignment engine will review the list of rules for the custom data source before reviewing the rules for the seeded data source. The rule order for each data source, however, will still apply.
Note: Only rules with assigned templates appear in the reordering shuttleboxes
Note: If you create a rule initially only for online bills, but later update the rule to apply to printed bills also, the rule is placed at the bottom of the list of rules for printed bills. You can change the rule order using the Reorder button. This is true also if you initially assign a rule only for printed bills and later assign the rule for online bills.