Record signup fix delivery and recovery limitation

docs/signup-facts.md

@@ -8,7 +8,9 @@ Delivery: [PR #47](https://git.sendico.io/tech/sxchnge/pulls/47), targeting `mai
 ## Registration response correction
 
 Follow-up [#57](https://git.sendico.io/tech/sxchnge/issues/57), branch
-`identity-facts-57`, corrects the registration success status to HTTP 201 Created.
+`identity-facts-57`, delivered in [PR #59](https://git.sendico.io/tech/sxchnge/pulls/59)
+against `main` (implementation `abca15f`), corrects the registration success status
+to HTTP 201 Created. The PR remains unmerged.
 Sendico's individual creation handler returns 201; the original adapter and test
 fixture incorrectly required 200. A successful registration therefore left a
 pending customer with an unresolved claim and `signup_attention_required`.