PUT /api/v3/bill/reverse Deprecated

Creates reversal (credit) bills for specified bills

ReverseBillsV3 Permissions: BillsAndBatches (Edit)
DEPRECATED (V202510): This endpoint is obsolete. Use the V202510 ReverseBillsWithMultipleOpenBatchOptions endpoint instead. Creates new bills with negated amounts to reverse the original bills. Optional batch settings control the destination batch for reversal bills.

Request Headers

Header Value Required Description
ECI-ApiKey string Yes Your API key. See Authentication.
Content-Type application/json Yes All requests must specify JSON content type, including the request body.

Request Body

BillReversalRequest
Property Description Type
batchSettings BatchCreate
BatchCreate properties
Property Description Type
accountPeriodNumber Account period number for batch - will get applied as default to any bill added to this batch integer (int32)
accountPeriodYear Accountperiod year for batch - will get applied as default to any bill added to this batch Must be between 1900 and 2099 integer (int32)
batchCode The batch code Required Must be between 0 and 255 characters string
closeExistingBatch If user has other batches open, should they be closed? boolean
controlCode Control code for batch - will get applied as default to any bill added to this batch Must be between 0 and 255 characters string
dueDate Due date for batch - will get applied as default to any bill added to this batch string (date-time)
invoiceNumber Invoice number for batch - will get applied as default to any bill added to this batch Must be between 0 and 255 characters string
nextReading Next reading date for batch - will get applied as default to any bill added to this batch string (date-time)
note Note/comment for batch Must be between 0 and 255 characters string
statementDate Statement date for batch - will get applied as default to any bill added to this batch string (date-time)
billIds Bill ids to reverse Required Cannot be Empty integer[]
Example Request Body application/json 
{  "batchSettings": {    "accountPeriodNumber": 1,    "accountPeriodYear": 1,    "batchCode": "string",    "closeExistingBatch": false,    "controlCode": "string",    "dueDate": "2026-06-29",    "invoiceNumber": "string",    "nextReading": "2026-06-29",    "note": "string",    "statementDate": "2026-06-29"
  },  "billIds": [
    1
  ]
}

Responses

200 OK The request succeeded and the response body contains the requested data.

Response Body Parameters

UpdateResult
Property Description Type
selected The total number of items that were targeted by the bulk operation Required (defined) integer (int32)
updated The number of items that were actually modified (excludes items that already matched the target state) Required (defined) integer (int32)
Example Response application/json 
{  "selected": 1,  "updated": 1
}