Data extraction from knowledge base

I try to setup a GPT which is capable to extraxt data from a Excel-Table with 14.000 rows and 6 columns. In one column are URLs. ChatGPT has problems to extract the URL as it is. It always makes changes within the last part of the URL - which is a 9-digit number. The base-URL is correct, only the numbers are changed. I have no idea what to to …