Errors in Transaction SHMA - Binding has invalid value

Question

I'm trying to create a shared memory area in transaction SHMA 
I entered the area name and the root class name and just kept all the default values.   When I do a syntax check I get 2 major errors 1.  Binding has invalid value, and 2.  Synchronization has invalid value.
I don't see any settings for these attributes - has anybody seen this before?
Thanks,
Brent

Answer 1

> I was just thinking, do I have to generate an instance of the class before I do the syntax check?   Is the syntax performed on the instance or the definition of the shared memory area?
I don't understand what you mean. The syntax check is only about abap code, so?
In fact, what class are you talking about? Is it the root class, or the generated class corresponding to the handling of the shared memory area (the one with the same name as the area)?
Here are tips to understand the relationships between the area and related ABAP classes:
Create area Z_MY_AREA via transaction SHMA, choose a ZCL_MY_DATA root class name (must either exist or it can be created manually within SHMA; it must have attribute "SHARED-MEMORY ENABLED")
You must define in this ZCL_MY_DATA class at least one instance attribute
When you save the area, SAP creates automatically a class with the same name as the area (Z_MY_AREA), which inherits CL_SHM_AREA (which itself inherits CL_ABAP_MEMORY_AREA), and with an attribute named "ROOT" type ref to ZCL_MY_DATA