ALV: Error calling add_protocol_entry

[Former Member]

Hi,

I want to avoid to call the fm 'POPUP_TO_INFORM' for showing an error message in my alv. I'd like to collect all errors and set the field in error (red). I am trying to follow the following steps:

1) DATA pr_data_changed type ref to cl_alv_changed_data_protocol.

2) call method pr_data_changed->add_protocol_entry

exporting

i_msgid = '0K' i_msgno = '000' i_msgty = 'E'

i_msgv1 = text-i03

i_fieldname = 'MATNR'

i_row_id = 1.

3) CALL METHOD pr_data_changed->display_protocol.

I receive this error when the step 2 is executed.

You attempted to use a 'NULL' object reference (access a component (variable: "PR_DATA_CHANGED").

Any help will be well appreciated.

Thanks in advance.

Regards,

Giovanni

[Former Member]

Create the object PR_DATA_CHANGED before calling the methods of the class CL_ALV_CHANGED_DATA_PROTOCOL using the object PR_DATA_CHANGED.

[Former Member]

Hi and thanks for the suggestion but is it possible ti have an example how to create the PR_DATA_CHANGED object?

Thanks.

Giovanni