Welcome to the community, @Darwin_Nomad! I’m not sure that I understand what you’re trying to do. When you say “post a link between records,” are you talking about creating the link? I’m guessing that A and B are your tables, and you want to link Record X in
[Table A] to Record Y and Record Z in
[Table B], while also doing the reverse from B back to A. Is that correct?
This reciprocal link behavior is automatic in Airtable. Make a link field in
[Table A] that lets you link to
[Table B]. Go to Record X, then create a new link to Record Y and Record Z in
[Table B]. That’s it. If you look in
[Table B], you’ll see the a new link field that Airtable made for you, and you’ll find reciprocal links on Record Y and Record Z that both point back to Record X in
Does that answer your question? If not, could you please provide more specific details on what you’re trying to achieve? If you can attach screenshots, that would be extremely helpful.