Not Able to add TextTab - docusignapi

Question

Hi I am able to send envelope by adding signhere tab but when i am trying to add TextTabs it is giving below error(I am using rest API's)
INVALID_REQUEST_BODY The request body is missing or improperly formatted. Null object cannot be converted to a value type.
Below is my request JSON of envelope definition
{
"documents": [{
"documentId": "1136641236",
"uri": null,
"remoteUrl": null,
"name": "ABC Merchant Agreement",
"password": null,
"transformPdfFields": null,
"fileExtension": null,
"matchBoxes": null,
"order": null,
"pages": null,
"documentFields": null,
"encryptedWithKeyManager": null,
"documentBase64": "documentBase64",
"applyAnchorTabs": null
}
],
"recipients": {
"signers": [{
"signatureInfo": null,
"defaultRecipient": null,
"tabs": {
"signHereTabs": [{
"name": null,
"tabLabel": null,
"scaleValue": null,
"optional": null,
"documentId": "1136641236",
"recipientId": "2044556663",
"pageNumber": "1",
"xPosition": null,
"yPosition": null,
"anchorString": "SIGNATUREOWNER1",
"anchorXOffset": null,
"anchorYOffset": null,
"anchorUnits": null,
"anchorIgnoreIfNotPresent": null,
"anchorCaseSensitive": "True",
"anchorMatchWholeWord": "True",
"anchorHorizontalAlignment": null,
"tabId": null,
"templateLocked": null,
"templateRequired": null,
"conditionalParentLabel": null,
"conditionalParentValue": null,
"customTabId": null,
"mergeField": null,
"status": null,
"errorDetails": null
}
],
"initialHereTabs": null,
"signerAttachmentTabs": null,
"approveTabs": null,
"declineTabs": null,
"fullNameTabs": null,
"dateSignedTabs": null,
"envelopeIdTabs": null,
"companyTabs": null,
"titleTabs": null,
"textTabs": [{
"height": null,
"isPaymentAmount": null,
"formula": null,
"validationPattern": null,
"validationMessage": null,
"shared": null,
"requireInitialOnSharedChange": null,
"senderRequired": null,
"requireAll": null,
"name": "TextTab",
"value": null,
"originalValue": null,
"width": null,
"required": "true",
"locked": "false",
"concealValueOnDocument": null,
"disableAutoSize": null,
"maxLength": null,
"tabLabel": "gjk",
"font": null,
"bold": null,
"italic": null,
"underline": null,
"fontColor": null,
"fontSize": "Size12",
"documentId": "1136641236",
"recipientId": "2044556663",
"pageNumber": "1",
"xPosition": null,
"yPosition": null,
"anchorString": "TEXTTABPLACEHOLDER",
"anchorXOffset": null,
"anchorYOffset": null,
"anchorUnits": null,
"anchorIgnoreIfNotPresent": null,
"anchorCaseSensitive": "True",
"anchorMatchWholeWord": "True",
"anchorHorizontalAlignment": null,
"tabId": null,
"templateLocked": null,
"templateRequired": null,
"conditionalParentLabel": null,
"conditionalParentValue": null,
"customTabId": null,
"mergeField": null,
"status": null,
"errorDetails": null
}
],
"numberTabs": null,
"ssnTabs": null,
"dateTabs": null,
"zipTabs": null,
"emailTabs": null,
"noteTabs": null,
"checkboxTabs": null,
"radioGroupTabs": null,
"listTabs": null,
"firstNameTabs": null,
"lastNameTabs": null,
"emailAddressTabs": null,
"formulaTabs": null
},
"signInEachLocation": null,
"offlineAttributes": null,
"requireSignerCertificate": null,
"requireSignOnPaper": null,
"canSignOffline": null,
"isBulkRecipient": null,
"bulkRecipientsUri": null,
"recipientSuppliesTabs": null,
"excludedDocuments": null,
"name": "name",
"email": "emailid",
"emailRecipientPostSigningURL": null,
"signingGroupId": null,
"signingGroupName": null,
"signingGroupUsers": null,
"recipientId": "2044556663",
"recipientIdGuid": null,
"accessCode": null,
"addAccessCodeToEmail": null,
"requireIdLookup": null,
"idCheckConfigurationName": null,
"socialAuthentications": null,
"phoneAuthentication": null,
"samlAuthentication": null,
"smsAuthentication": null,
"userId": null,
"clientUserId": null,
"embeddedRecipientStartURL": null,
"customFields": null,
"routingOrder": "1",
"idCheckInformationInput": null,
"recipientAttachments": null,
"note": null,
"roleName": null,
"status": null,
"signedDateTime": null,
"deliveredDateTime": null,
"declinedDateTime": null,
"sentDateTime": null,
"declinedReason": null,
"deliveryMethod": null,
"faxNumber": null,
"templateLocked": null,
"templateRequired": null,
"emailNotification": null,
"inheritEmailNotificationConfiguration": null,
"errorDetails": null,
"recipientAuthenticationStatus": null,
"totalTabCount": null
}
],
"agents": null,
"editors": null,
"intermediaries": null,
"carbonCopies": null,
"certifiedDeliveries": null,
"inPersonSigners": null,
"recipientCount": null,
"currentRoutingOrder": null,
"errorDetails": null
},
"customFields": {
"textCustomFields": [{
"fieldId": "788788",
"name": "AppNumber",
"show": "false",
"required": "false",
"value": "788788",
"configurationType": null,
"errorDetails": null
}
],
"listCustomFields": null
},
"eventNotification": null,
"brandId": "BrandId",
"allowRecipientRecursion": null,
"templateId": null,
"templateRoles": null,
"compositeTemplates": null,
"accessibility": null,
"transactionId": null,
"status": "sent",
"documentsUri": null,
"recipientsUri": null,
"asynchronous": null,
"envelopeUri": null,
"emailSubject": "ABC Agreement",
"emailBlurb": "Please Sign",
"envelopeId": null,
"signingLocation": null,
"customFieldsUri": null,
"envelopeIdStamping": null,
"authoritativeCopy": null,
"notification": {
"useAccountDefaults": null,
"reminders": {
"reminderEnabled": "true",
"reminderDelay": "1",
"reminderFrequency": "2"
},
"expirations": {
"expireEnabled": "true",
"expireAfter": "2",
"expireWarn": "1"
}
},
"notificationUri": null,
"enforceSignerVisibility": null,
"enableWetSign": null,
"allowMarkup": null,
"allowReassign": null,
"createdDateTime": null,
"lastModifiedDateTime": null,
"deliveredDateTime": null,
"sentDateTime": null,
"completedDateTime": null,
"voidedDateTime": null,
"voidedReason": null,
"deletedDateTime": null,
"declinedDateTime": null,
"statusChangedDateTime": null,
"documentsCombinedUri": null,
"certificateUri": null,
"templatesUri": null,
"messageLock": null,
"recipientsLock": null,
"useDisclosure": null,
"emailSettings": null,
"purgeState": null,
"lockInformation": null,
"is21CFRPart11": null
}

Answer 1

The error message says it all
Null object cannot be converted to a value type.
Remove the properties which have null value assigned to them. The following JSON should work.
{
"documents": [
{
"documentId": "1136641236",
"name": "ABC Merchant Agreement",
"documentBase64": "documentBase64"
}
],
"recipients": {
"signers": [
{
"tabs": {
"signHereTabs": [
{
"documentId": "1136641236",
"pageNumber": "1",
"anchorString": "SIGNATUREOWNER1",
"anchorCaseSensitive": "True",
"anchorMatchWholeWord": "True"
}
],
"textTabs": [
{
"name": "TextTab",
"required": "true",
"locked": "false",
"tabLabel": "gjk",
"fontSize": "Size12",
"documentId": "1136641236",
"pageNumber": "1",
"anchorString": "TEXTTABPLACEHOLDER",
"anchorCaseSensitive": "True",
"anchorMatchWholeWord": "True"
}
]
},
"name": "name",
"email": "emailid",
"recipientId": "2044556663",
"routingOrder": "1"
}
]
},
"customFields": {
"textCustomFields": [
{
"fieldId": "788788",
"name": "AppNumber",
"show": "false",
"required": "false",
"value": "788788"
}
]
},
"brandId": "BrandId",
"status": "sent",
"emailSubject": "ABC Agreement",
"emailBlurb": "Please Sign",
"notification": {
"reminders": {
"reminderEnabled": "true",
"reminderDelay": "1",
"reminderFrequency": "2"
},
"expirations": {
"expireEnabled": "true",
"expireAfter": "2",
"expireWarn": "1"
}
}
}