Optimize performance if you use field attributes

If you choose to continue using Field Attributes, use the following guidelines to maximize performance:

• No more than 64 Field Attributes (maximum of 32 analog and 32 discrete) should be used for an individual object. If this limit is exceeded, the performance of object editing and check-in operations slows down significantly.

• Do not extend an existing Field Attribute by activating features on the Attributes page.

  For example, to add historization to an existing Field Attribute, select the Enable history option from the Field Attributes page. DO NOT use the Attributes page to add the History feature.

• Converting from Field Attributes to Attributes will greatly enhance performance, particularly if many Attributes are used.