Can't update Business Partner "Journal entries linked to card".

I'm working on a solution for SAP Business One, using DI Server. In this solution we update Business Partners at regular basis through BusinessPartnerServices XMLs. This wasn't a problem in the development environment, but as soon as we went to production stage every time we try to update a BP we get the error "Journal entries linked to card", and we don't know what may be causing that.

Does someone know what may be causing it? And how to solve it?

I'm using version 9.00.59 PL 07 32bit in the development environment and the productive has version 9.00.056 PL 04 32bit.

Thanks in advance.