Hi @AbhishekC1725,

Case 1: Obj-Open vs. Obj-Open-By-Handle

Obj-Open is a general-purpose method for opening an object instance based on its class key/Primary key. It's the safer and more common choice in most cases.

Obj-Open-By-Handle uses an internal, system-generated pzInsKey to open an instance. This pzInsKey is unique and permanent, unlike the class key which can be shared by multiple instances. Use Obj-Open-By-Handle only when:

• If we know the exact pzInsKey of the specific instance you want to open.
• Performance is critical: Obj-Open-By-Handle can be slightly faster than Obj-Open in some situations.

In summary:

• Use Obj-Open for most cases.
• Use Obj-Open-By-Handle only when needed for specific reasons.

Case 2: pyID and pzInsKey in Obj-Open

pyID in Obj-Open: In Pega, pyID is the property that holds the unique identifier for an instance. When using Obj-Open, you typically provide the key values for the class in order to uniquely identify the instance. pyID is often used as part of these key values.

pzInsKey in Obj-Open: While you can use pzInsKey to uniquely identify an instance, it's not a recommended practice in Pega. pzInsKey is an internal system property, and it's not intended for external use. It's safer and more standard to use the class's primary key properties (including pyID) when working with Obj-Open

Case 3: Using Obj-Open-By-Handle

Use Obj-Open-By-Handle when:

• If we know the exact pzInsKey of the instance go for Obj-Open-By-Handle.
• You need maximum performance and Obj-Open is too slow..

Remember:

• Always prioritize Obj-Open unless there's a specific reason to use Obj-Open-By-Handle.
• Make sure you understand the handle format and how to obtain it accurately.
• Specify the Step Page (where to load the opened instance) to avoid overwriting existing data.

I hope this clarifies the differences between Obj-Open and Obj-Open-By-Handle, and when to use each one.

Regards,

Mohd Qizer Uddin