Sync fields only when empty

[Anonymous]

Hi. is there a way to sync fields on the Marketo only in case they are empty, so that I don't overide existing values?
So that if for example i use "syncMultipleLeads", and update a field with a value - nothing happens but if the field is empty, it will store the value.

Thanks

[Anonymous]

I think this is possible with a little coding (first fetch the value. then determine of you want to push a new value).
Another trick might be to go to your admin area. You can determine field update rules per field for each method (including api, munchkin). All details are here: http://community.marketo.com/MarketoArticle?id=kA050000000KypCCAS

[Anonymous]

Amnon,

As Diederik noted in the 2nd half of his note, we already have this functionality available to Marketo admins. It's called "block field updates". Blocking updates to a field will allow it to be written to once and then retain the original value for the lifetime of the field. You can read more about it here (same article that Diederik references above).

Thanks, Ei-Mang