We experienced that we cannot change the attribute values "Type definition" and "Value domain" for "Input Data"-elements in Multi Instance Decisions.
Unfortunately, this behaviour is a bug in the following versions:
- SaaS: 12.11.1
- OnPremise: 12.3.4
We already informed our development to fix this issue in the future.
KBA , BPI-SIG-PM-ONP-SOL , Solr for SAP Signavio Process Manager , How To