Epic: Direct Debit Payment Methods

[bborman22]

The goal of this epic is to enable three direct debit payment methods: ACH (US), Bacs (UK), and Pre-Authorization (CA). The epic will start with three spikes, one for each method to determine what overlapping efforts there might be and whether to approach each of them separately or as part of one project. Initially these spikes will be the only issues in the epic, but depending on the results of the spike, we may continue using this epic for the whole project or break it into three new epics.

Spikes

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1. Spike: Enable ACH payment method #3706
   type: spike +1
   
2. Spike: Enable Bacs payment method #3707
   type: spike +1
   
3. Spike: Enable Pre-auth payment method #3708
   type: spike +1
   

ACH

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1. ACH: Add Feature Flag #3744
   component: LPMs/APMs +1
   
2. ACH: Process Payment with a Non-saved Payment Method #3747
   component: LPMs/APMs +1
   
3. ACH: Process Payment with a Saved Payment Method #3787
   component: LPMs/APMs +1
   
4. ACH: Process Refunds #3806
   component: LPMs/APMs +1
   
5. ACH: Handle ACH-specific Errors and Edge Cases #3807
   component: LPMs/APMs +1
   
6. ACH: UI/UX Enhancements and Design Review #3808
   component: LPMs/APMs needs design +2
7. ACH: Add E2E Tests #3749
   component: LPMs/APMs type: enhancement +2
   
8. ACH: WC Subscription support #3829
   component: LPMs/APMs +1
   
9. ACH: Test Extensions Compatibility #3809
   component: LPMs/APMs +1
   
10. ACH: Update Documentation #3748
    component: LPMs/APMs needs docs +2
11. ACH: Enable the feature flag by default #4011
    +0
    
12. ACH: Clean-up Feature flag code #4012
    +0

Bacs

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1. Bacs: Add Feature Flag #3750
   component: LPMs/APMs +1
   
2. Bacs: Process Payment with Non-saved Bank Details #3751
   component: LPMs/APMs +1
   
3. Bacs: Process Payment with Saved Bank Details #3752
   component: LPMs/APMs +1
   
4. Bacs: Process Refunds #3796
   component: LPMs/APMs +1
5. Bacs: Handle Errors and Edge Cases #3799
   component: LPMs/APMs +1
   
6. Bacs: UI/UX Enhancements and Design Review #3800
   component: LPMs/APMs +1
7. Bacs: Add E2E Tests #3802
   component: LPMs/APMs +1
8. Bacs: Update Documentation #3801
   +0
9. Bacs: WooCommerce Subscriptions support #3798
   component: LPMs/APMs +1
10. Bacs: Test Extension Compatibility #3803
    +0
11. BACS: Add support to create payment methods using Checkout Sesssions. #4006
    +0
12. Bacs: Enable the feature flag by default #4016
    +0

ACSS (Canadian Pre-Authorized Debit)

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1. ACSS: Add Feature Flag #3781
   component: LPMs/APMs +1
   
2. ACSS: Refactor deferred intent approach for ACSS #3804
   component: LPMs/APMs +1
   
3. ACSS: Refactor unsupported deferred intent in the blocks checkout #3851
   component: LPMs/APMs +1
   
4. ACSS: Handle Errors and Edge Cases #3830
   component: LPMs/APMs +1
   
5. ACSS: Process payments with saved payment method #3813
   component: LPMs/APMs +1
   
6. ACSS: UI/UX Enhancements and Design Review #3782
   component: LPMs/APMs +1
7. ACSS: Add E2E Tests #3783
   component: LPMs/APMs +1
   
8. ACSS: Update Documentation #3784
   component: LPMs/APMs needs docs +2
9. ACSS: WC Subscription support #3831
   +0
   
10. ACSS: Test Extensions Compatibility #3832
    +0