Medications with the same name generating an error

Source:  - An error occurred while attempting to import the medication definition.

Column 'act_md_custom_name' does not belong to table Table1.
   at System.Data.DataRow.GetDataColumn(String columnName)
   at System.Data.DataRow.get_Item(String columnName)
   at jProgBusiness.jBusiness.jTestSetup.updateAnyMedNameConflicts(String sessionToken, 
jMedicationDefinition Medication)
   at jProgBusiness.jBusiness.jTestSetup.MedicationAdd(String GUIDToken, jMedicationDefinition Medication, 
jBusinessShared BusinessShared, jDatabaseEncryption Enc)
   at jProgBusiness.jBusiness.jBusinessRemote.MDC_Medication_Import(String SessionToken, jMedicationDefinition
 Medication, String DomainPK)

Server stack trace:
   at jProgBusiness.jBusiness.jBusinessRemote.MDC_Medication_Import(String SessionToken, jMedicationDefinition 
Medication, String DomainPK)
   at System.Runtime.Remoting.Messaging.StackBuilderSink._PrivateProcessMessage(IntPtr md, Object[] args, 
Object server, Int32 methodPtr, Boolean fExecuteInContext, Object[]& outArgs)
   at System.Runtime.Remoting.Messaging.StackBuilderSink.PrivateProcessMessage(RuntimeMethodHandle md, 
Object[] args, Object server, Int32 methodPtr, Boolean fExecuteInContext, Object[]& outArgs)
   at System.Runtime.Remoting.Messaging.StackBuilderSink.SyncProcessMessage(IMessage msg, Int32 methodPtr, 
Boolean fExecuteInContext)

Exception rethrown at [0]:
   at jProgBusiness.jBusiness.jClientSideRemote.MDC_Medication_Import(String SessionToken, jMedicationDefinition Medication, 
String DomainPK)
   at Client.MedicationImportSetup.AddToCurrentList()
An error occurred while attempting to import the medication definition.