BRD Analysis Index
Deep per-stage backend analyses derived from the original EKYC3 BRD plus gap notes and old-to-new mappings.
Reading order: For a stage you care about, read the
Backend guide first, then the matching Gap analysis and
the Old → New mapping. The per-stage guides describe the target
implementation; gap and mapping pages explain how we got here from the
legacy code.
Reference 3
Per-Stage Backend Deep Dives 17
01
02
03
05
06
08
09
11
12
14
15
17
18
20
21
23
24
Registration Backend
Intro
Login / Resume Backend
Intro
Stage 1 — Registration
Stage 1
Stage 2 — OTP + PAN + KRA
Stage 2
Stage 3 — Email Verification
Stage 3
Stage 4 — PAN Confirmation
Stage 4
Stage 5 — Aadhaar + DigiLocker
Stage 5
Stage 6 — Bank Verification
Stage 6
Stage 7 — Liveness + Photo Match
Stage 7
Stage 8 — Signature
Stage 8
Stage 9 — Personal Details
Stage 9
Stage 10 — Income Proof
Stage 10
Stage 11 — Final Validation
Stage 11
Stage 12 — Document Generation
Stage 12
Stage 13 — eSign
Stage 13
Stage 14 — Account Creation
Stage 14
Stage 15 — Activation + Payment
Stage 15
Gap Analyses 13
04
07
10
13
16
19
22
25
S0-1
S2-3
S4-5
S6-7
S8-9
Gap — Registration / Login / Stage 1
Gap
Gap — Stage 2 + Stage 3
Gap
Gap — Stage 4 + Stage 5
Gap
Gap — Stage 6 + Stage 7
Gap
Gap — Stage 8 + Stage 9
Gap
Gap — Stage 10 + Stage 11
Gap
Gap — Stage 12 + Stage 13
Gap
Gap — Stage 14 + Stage 15
Gap
Stage 0 + Stage 1 — Detailed Gaps
Deep Gap
Stage 2 + Stage 3 — Detailed Gaps
Deep Gap
Stage 4 + Stage 5 — Detailed Gaps
Deep Gap
Stage 6 + Stage 7 — Detailed Gaps
Deep Gap
Stage 8 + Stage 9 — Detailed Gaps
Deep Gap