expressionengine related entries dropdown value

I have 2 channels. Channel 2 has a dropdown select box relating to channel 1. I want to display all info regarding both channels on a single page:

{exp:channel:entries channel="channel1|channel2" require_entry="yes" limit="1"}
{title}
Channel1 info: {tag_from_channel1}
...                             
{reverse_related_entries id="channel2"}
...
{/reverse_related_entries}
{/exp:channel:entries}

I'm getting ID from {tag_from_channel1} instead of value. How can I display value instead of ID?

---

Try removing the require_entry="yes" parameter, which aide in your troubleshooting:

{exp:channel:entries channel="channel1|channel2" limit="1"}
    {title}

    {reverse_related_entries}
        {title}
    {/reverse_related_entries}
{/exp:channel:entries}

You can further debug your issue by eliminating the URL causing a problem by hard-coding your Channel Entries query with dynamic="off" and specifying a single entry with entry_id="99" :

{exp:channel:entries ... dynamic="off" entry_id="99"}

Also, the {reverse_related_entries} tag shouldn't have an id= parameter. From the ExpressionEngine Relationship Documentation:

Unlike the Related Entries tag, the Reverse Related Entries tag does not contain an ID parameter as there is no need.

Did you perhaps intend to use {related entries} instead?

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