You will see the following error message in H&R Block’s 2015 tax software if you have entered a taxable CPP/QPP benefit amount in box 20 on the T4A(P): Statement of Canada Pension Plan Benefits page but did not indicate the number of months you received CPP/QPP retirement benefits during the year in box 23:
You reported taxable CPP/QPP benefits in box 20 on the T4A(P) slip, so you need to report the number of months of retirement in box 23, as shown on the T4A(P) slip. [error code: 123]
To correct the error, refer to your T4A(P) slip and enter the correct values shown in box 20 and box 23 into the designated fields of the tax software. If you received a T4A(P) slip, you must report amounts from the slip on the T4A(P): Statement of Canada Pension Plan Benefits page under the RETIREMENT INCOME icon on the PREPARE tab.
Note: You cannot leave this field blank. If you received a T4A(P) slip but did not collect CPP/QPP retirement benefits during the year, enter 0 in box 23.