I am trying to add Opportunity Sales Team through Apex. Trigger works fine except "OpportunityAccessLevel" field.

Here is the error : Field is not writeable: OpportunityAccessLevel

If I insert the record without specifying the OpportunityAccessLevel = 'Read/Write'  , default values is getting assigned as OpportunityAccessLevel = 'Read Only'.  I need to assign value OpportunityAccessLevel = 'Read/Write' while adding sales team member.

Any workaround ?

Thanks

Pramod