Expression evaluation error in rule Invalid index: Cannot index property 'EXTERNAL_PROTECTION_TYPE' of type Text into type EWR_EPMPARFPipeline?list^2

Question

Hi All, 
 I am getting the following expression error when I tried to assign CDT field value into local variable: 
 
 local!invalidGPIFExtProtecType: or(if(rule!APN_isEmpty(ri!EWR_EPMPARFPipelineList), false, apply(rule!APN_isEmpty(_), ri!EWR_EPMPARFPipelineList.EXTERNAL_PROTECTION_TYPE))), 
 local!invalidGPIFExtProMasterData: or(if(rule!APN_isEmpty(ri!EWR_EPMPARFPipelineList), false, apply(rule!APN_isEmpty(_), ri!EWR_EPMPARFPipelineList.EXTERNAL_PROTECTION))), 
 
 Error: 
 Expression evaluation error in rule 'ewr_formcreateeditplparf' at function 'apply' parameter 2 [line 85]: Invalid index: Cannot index property 'EXTERNAL_PROTECTION_TYPE' of type Text into type EWR_EPMPARFPipeline?list^2 
 
 Please suggest. 
 
 Regards, 
 Venkat.

Ravi Roshan · Answer

Hi, 
 
As your error clearly says that you are referring the old CDT type, so please make sure in your old CDT you have the field "EXTERNAL_PROTECTION_TYPE". If your old CDT has the mentioned field, than please instead of dot notation please use it using the index function as : index(ri!EWR_EPMPARFPipelineList,"EXTERNAL_PROTECTION_TYPE",{})