In the SAPgraphical user interface, it might happen that the entries are displayed without their keys (the main identifier from the corresponding table), as seen below.
Dropdown list without table keys
In order to do so, in the SAPGUI, open the Options… from the Customize Local Layout menu
Options… menu from Customize Local Layout
Here, in Interaction Design > Visualization 1, check the option Show keys within dropdown lists
Consider also checking the Sort by keys within dropdown lists for most efficient keyboard input, in order to have the entries sorted by the key instead of the description.
Show keys within dropdown lists option in Interaction Design settings
After having saved the changed, exit the current SAPtransaction, and come back – check a dropdown list, and the keys are now displayed, which allows more efficient search !