I have a dropdown list.If no selection is made, the system saves a null value in

Question

I have a dropdown list.If no selection is made, the system saves a null value into the component's Save Selection To field.Confused by this Error - "A dropdown component [label=“Company”] has an invalid value for “value”. All selected values must be present in the choiceValues array, but value was and choiceValues was ABI2WG ; ACC1LON ; ACEI4BRI; ACI2SYD ; ".
Expression Error : "Expression evaluation error in rule 'vc_mc_brokercontactdetail' (called by rule 'vc_mc_managecontacts'): A null parameter has been passed."
Below is the code which renders it
a!dropdownField(
label: cons!VC_LB_COMPANY,
labelPosition: cons!VC_LB_POSITION_ADJACENT,

choiceLabels: {
apply(fn!tostring,local!brokerCompany.id)
},
choiceValues: {
apply(fn!tostring,local!brokerCompany.id)
},
placeholderLabel: cons!VC_CMS_LB_PLACEHOLDER_SELECT...

Jeroen Elsen · Answer

Hi, I just had the same issue, I had to encapsulate the value in a 'tostring' so that the types matched. So value: tostring(local!broker.customer_Code) 
 
 a!dropdownField( label: cons!VC_LB_COMPANY, labelPosition: cons!VC_LB_POSITION_ADJACENT, choiceLabels: { apply( fn!tostring ,local!brokerCompany.id) }, choiceValues: { apply( fn!tostring ,local!brokerCompany.id) }, placeholderLabel: cons!VC_CMS_LB_PLACEHOLDER_SELECT, 
 value: tostring( local!broker.customer_Code ) , saveInto: local!broker.customer_Code )

I have a dropdown list.If no selection is made, the system saves a null value in

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