# Create Custom Field List Box using API **URL:** \ **Category:** API Q&A\ **Tags:** custom-fields, api\ **Created:** [July 4, 2020, 3:18pm UTC](https://integration.keap.com/t/create-custom-field-list-box-using-api/78278 "2020-07-04T15:18:57Z")\ **Posts on this page:** 8\ **Page:** 1
**Author:** ![Garik\_Tate](https://avatars.discourse-cdn.com/v4/letter/g/43a26b/32.png) [@Garik\_Tate](https://integration.keap.com/u/Garik_Tate)\ **Post date:** [July 4, 2020, 3:18pm UTC](https://integration.keap.com/t/create-custom-field-list-box-using-api/78278/1 "2020-07-04T15:18:57Z")
Our app dynamically created a Drilldown (Select) Custom Field successfully before. Now, we need to dynamically create a List Box. But I can’t seem to figure out the correct “DataType” value for it. **WHAT WE DID:** We’re about to send these values to **DataService.addCustomField** ``` array:4 [▼ "customFieldType" => "Contact" "displayName" => "XXXXX" "dataType" => "Option List" // <-- what we need to figure out "headerId" => 47 ] ``` We then get an error that says: > [InvalidParameter]The data type “Option List” is an invalid type **WHAT WE TRIED:** 1. We tried to look for something in **[this guide](https://developer.infusionsoft.com/docs/xml-rpc/#data-create-a-custom-field)**. However, it only mentions Text, Select (Used for Dropdown), TextArea. It didn’t say anything about “List Box”. 2. We also checked **[here](https://help.infusionsoft.com/help/choose-custom-field-types)** but it also doesn’t say anything about what “dataType” to use when creating “List Box” thru the API. 3. We tried doing all these below as a possible “dataType” values to create List Box. But the same “invalid type” error still shows. > List Box > ListBox > List > Box > Options > Option > Option List > OptionList > Options List > Option Lists > Options Lists > “17” ← sent as a string, because ListBox DataType integer is 17. > 17 ← sent as an integer. Returns “no method matching args” error instead. 1. Lastly, we tried creating a record directly at DataFormField group by executing `request('DataService.add', 'DataFormField', $values)` With values: ``` $values = [ "Label" => "XXXXX", "DataType" => 17, "ListRows" => 0, "FormId" => -1, "GroupId" => 47, "Name" => "XXXXX" ]; ``` Although no error occurred, but the return value is **FALSE**. No new custom field was created when checking Infusionsoft too. **QUESTION** Is it possible to create a custom field List Box? and if so, what “DataType” value do we need for it? Or maybe we missed something from the steps we did above? ---
**Author:** ![John\_Borelli](https://sea1.discourse-cdn.com/flex019/user_avatar/integration.keap.com/john_borelli/32/11880_2.png) [@John\_Borelli](https://integration.keap.com/u/John_Borelli)\ **Post date:** [July 5, 2020, 11:12pm UTC](https://integration.keap.com/t/create-custom-field-list-box-using-api/78278/2 "2020-07-05T23:12:04Z")
Option list is not a data type and the data type field is an enumeration of data types determined in the table documentation. For the drill down it must be set to 23 ![image](https://us1.discourse-cdn.com/flex019/uploads/infusionsoft1/original/2X/7/74555b4c9b88d2e1464e42adadcde6aac11b7456.png) ---
**Author:** ![Garik\_Tate](https://avatars.discourse-cdn.com/v4/letter/g/43a26b/32.png) [@Garik\_Tate](https://integration.keap.com/u/Garik_Tate)\ **Post date:** [July 6, 2020, 2:08am UTC](https://integration.keap.com/t/create-custom-field-list-box-using-api/78278/3 "2020-07-06T02:08:49Z")
@John_Borelli oh sorry, thanks for the clarification. But what I mean is we need to create a List Box - where a user can select multiple items from a list: ![2020-07-06_09-51-21](https://us1.discourse-cdn.com/flex019/uploads/infusionsoft1/original/2X/4/49da451bf831f142ca5988f0da5f8ea77c9b306d.png) And we believe its ID is **17** : ![2020-07-06_09-57-05](https://us1.discourse-cdn.com/flex019/uploads/infusionsoft1/original/2X/f/f4fba6685155fd5a6e56dff0dba5eee638d326da.png) So we tried sending **17** as dataType to **DataService.addCustomField** like so: ``` array:4 [▼ "customFieldType" => "Contact" "displayName" => "XXXXX" "dataType" => "17" // <-- what we need to figure out "headerId" => 47 ] ``` But we still get this error: ![2020-07-06_10-02-27](https://us1.discourse-cdn.com/flex019/uploads/infusionsoft1/original/2X/1/1cdfa9797bbd2489ded1f8c30988be7525bb4fd9.png) ---
**Author:** ![John\_Borelli](https://sea1.discourse-cdn.com/flex019/user_avatar/integration.keap.com/john_borelli/32/11880_2.png) [@John\_Borelli](https://integration.keap.com/u/John_Borelli)\ **Post date:** [July 6, 2020, 1:37pm UTC](https://integration.keap.com/t/create-custom-field-list-box-using-api/78278/4 "2020-07-06T13:37:03Z")
Ok, so the format you’re showing doesn’t match either the xml-rpc or rest so which are you using. Let’s start there and work forward 😉 ---
**Author:** ![Garik\_Tate](https://avatars.discourse-cdn.com/v4/letter/g/43a26b/32.png) [@Garik\_Tate](https://integration.keap.com/u/Garik_Tate)\ **Post date:** [July 7, 2020, 1:07am UTC](https://integration.keap.com/t/create-custom-field-list-box-using-api/78278/5 "2020-07-07T01:07:02Z")
Oh okay. With regards to the format, we nailed it because we were able to create these three fields below **[using the xml-rpc guide](https://developer.infusionsoft.com/docs/xml-rpc/#data-create-a-custom-field)**. What we don’t know is the **“etc.”** part. We’re trying to figure out what value to use for ListBox. And we can’t seem to find any documentation for it. ![image](https://us1.discourse-cdn.com/flex019/uploads/infusionsoft1/original/2X/a/a3e0afd024958d5df6c78d65e8ac09de721b1227.png) ---
**Author:** ![Garik\_Tate](https://avatars.discourse-cdn.com/v4/letter/g/43a26b/32.png) [@Garik\_Tate](https://integration.keap.com/u/Garik_Tate)\ **Post date:** [July 11, 2020, 12:54am UTC](https://integration.keap.com/t/create-custom-field-list-box-using-api/78278/6 "2020-07-11T00:54:45Z")
Updating this post for future reference. Just sent a dev ticket, and they advised to use “MultiSelect”. It works now! ``` array:4 [▼ "customFieldType" => "Contact" "displayName" => "XXXXX" "dataType" => "MultiSelect" // <-- this works "headerId" => 47 ] ``` ---
**Author:** ![Edoardo\_Guzzi1](https://avatars.discourse-cdn.com/v4/letter/e/b77776/32.png) [@Edoardo\_Guzzi1](https://integration.keap.com/u/Edoardo_Guzzi1)\ **Post date:** [May 22, 2024, 7:05pm UTC](https://integration.keap.com/t/create-custom-field-list-box-using-api/78278/7 "2024-05-22T19:05:48Z")
I have the same question but with Whole Number and Decimal Number, cause they provide the table but they aren’t the right dataType for creare custom field via xml-rpc ---
**Author:** ![Edoardo\_Guzzi1](https://avatars.discourse-cdn.com/v4/letter/e/b77776/32.png) [@Edoardo\_Guzzi1](https://integration.keap.com/u/Edoardo_Guzzi1)\ **Post date:** [May 22, 2024, 9:40pm UTC](https://integration.keap.com/t/create-custom-field-list-box-using-api/78278/8 "2024-05-22T21:40:08Z")
Ok after reached the support here it is the list of dataType for custom fields. ![Screenshot-by-Lightshot](https://us1.discourse-cdn.com/flex019/uploads/infusionsoft1/original/2X/f/fb7626ad56809908c8dca1c4c899e96b1c6ca563.png) update: PhoneNumber is not valid. “Phone” is valid. WholeNumber is not valid: is Just “Number”. Ok good luck 😅