Updating BPNA addressType and assignment

[StWeisshaar]

Description

As sharing member of BPDM,
I want to be able to update the LegalAddress for an existing BPNL, and SiteMainAddress for an existing BPNS,
so that information that is already present in the BPDM Pool can be updated.

Acceptance Criteria

• BPDM Pool is able to update the LegalAddress for a given BPNL
• BPDM Pool is able to update the SiteMainAddress for a given BPNS
• Clear definition of which updates are allowed and how the BPDM Pool should behave
• Invalid update requests are rejected with an appropriate and understandable error message

Additional Information

Follow-up ticket to address the out-of-scope content for #1121

• Resolving conflicts between information shared by different parties
• Changes that would move a BPNA between two distinct BPNLs
• Changes that would affect which BPNA is considered the SiteMainAddress for BPNS
• Changes that would affect which BPNA is considered the LegalAddress for a BPNL

Open questions (this is not an exhaustive enumeration!):

• How should the Pool react in case a second LegalAddress or SiteMainAddresss is provided for the same BPNL or BPNA?
• How should the Pool react if a BPNA is provided together with a BPNL that is distinct from their currently assigned BPNL?
  • Cases differ depending if the chosen BPNA is a LegalAddress or SiteMainAddress
• How should the Pool react if a BPNA is provided together with a BPNS that is distinct from their currently assigned BPNS?
  • Cases differ depending if the chosen BPNA is a LegalAddress or SiteMainAddress

[maximilianong]

Needs clarification by expert group. Will be discussed there. Lead by @albireo411