Set behavior for duplicate data values

PI Web API enables you to define preferred system behavior for the treatment of duplicate data values in Data Archive.

To define whether new data entries should overwrite previously existing data:

1. Select the Attributes tab in the System Configuration window.

2. Select the OmfCreateMode attribute and enter one of the following:

   • Replace

     Note: We do not recommend using this mode because it skips compression.

   • NoReplace

   • Insert

For additional information, see AFUpdateOption Enumeration in the AF SDK Reference guide.