Is there any documentation on API that can be refered for iVend integration with other ERP

Is there any documentation on API that can be refered for iVend integration with other ERP

Product Query: 

Is there any documentation on API changes specifically with the methods or functions like GetQueue, GetQueueByWarehouse, and GetQueueOfEnterprise to perform an iVend integration with SAP R3 through a MiddleWare?

Version:

iVend 6.5.6


Acknowledgement: 

Attached API help file/document “iVend API Help.chm” can be referred to get more details on iVend API for any third-party integration with iVend . Also check documents available on Citixsys Support Portal.