Oracle R12 Standard COGS API Flow (COGS derivation based on Order Type).

OE_Flex_Cogs_Pub.Start_process

 FND_FLEX_WORKFLOW.INITIALIZE    

wf_engine.CreateProcess  

FND_FLEX_WORKFLOW.GENERATE  

wf_engine.StartProcess    
FND_FLEX_WORKFLOW_APIS.START_GENERATION    
OE_Flex_Cogs_Pub.GET_ORDER_TYPE_DERIVED    
FND_FLEX_WORKFLOW_APIS.COPY_FROM_COMBINATION   
 FND_FLEX_WORKFLOW_APIS.VALIDATE_COMBINATION    
FND_FLEX_WORKFLOW_APIS.END_GENERATION

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