What is wrong: crossCompany update job in AX 2012

I want to challenge you today to find an error in the following update job. Do not pay attention to the functional part. I agree, the job can be rewritten, but let's assume it must be done this way.

static void crossCompanyUpdate(Args _args) { CustTable custTable; CustGroup custGroup; PaymTermId oldPaymTermId = 'Net10', newPaymTermId = 'Net11'; ttsBegin; // find all companies with oldPaymTermId while select crossCompany custGroup group by custGroup.dataAreaId where custGroup.PaymTermId == oldPaymTermId { changeCompany(custGroup.dataAreaId) { // disable update method custTable.skipDataMethods(true); // set newPaymTermId update_recordSet crossCompany custTable setting PaymTermId = newPaymTermId where custTable.PaymTermId == oldPaymTermId; } } ttsCommit; }

Post your ideas into comments. I will open comments and post my solution in one week. Have fun :-)

Solution
There is no compile or runtime error, but records are updated only in one company. Table variable must be set to null within changeCompany statement, marked in orange below:

static void crossCompanyUpdate(Args _args) { CustTable custTable; CustGroup custGroup; PaymTermId oldPaymTermId = 'Net10', newPaymTermId = 'Net11'; ttsBegin; // find all companies with oldPaymTermId while select crossCompany custGroup group by custGroup.dataAreaId where custGroup.PaymTermId == oldPaymTermId { changeCompany(custGroup.dataAreaId) { custTable = null; // disable update method custTable.skipDataMethods(true); // set newPaymTermId update_recordSet crossCompany custTable setting PaymTermId = newPaymTermId where custTable.PaymTermId == oldPaymTermId; } } ttsCommit; }