Error entering amount received in Rapid Service Entry

Source: jProgBusiness - The INSERT statement conflicted with the FOREIGN KEY constraint "rlt_srv_rcp". 
The conflict occurred in database "CW_Data", table "dbo.cw_service", column 'srv_pk'.
The statement has been terminated. INSERT INTO cw_receipt ( rcp_pk , rcp_srv_fk , rcp_date , rcp_amount, 
rcp_source , rcp_last_updated) VALUES (@rcp_pk , @rcp_srv_fk , @rcp_date , @rcp_amount , @rcp_source , @rcp_last_updated)
cw_receipt.rcp_pk=122354a2-7335-430a-ae5f-6d1bd6c68f3e
cw_receipt.rcp_srv_fk=440d375d-353a-45e6-876c-b17ba40a5c11
cw_receipt.rcp_date=04/28/2011
cw_receipt.rcp_amount=492.95
cw_receipt.rcp_source=l
   at jProgBusiness.jBusiness.ServiceAdministration.AddReceipt(String loginToken, jAmountReceived rcp)
   at jProgBusiness.jBusiness.jBusinessRemote.SRV_Add_Receipt(String SessionToken, jAmountReceived rcp)
An error occurred in SRV_Add_Receipt.
If the problem persists, please contact technical support.
 Amount received can be added in client record but not in rapid entry system.