Problems linked to the operation of a PDA environmentThe review of operations initially signed with the Coutts company had to be interrupted due to operational constraints. The dilemma between traditional management methods and new management methods brought to the fore the question of whether traditional methods outperformed new purchasing management software like PDA. A very negative aspect which was not due to a fault in the system but to an error in setting the ceiling for library purchases which caused budgetary limits to be exceeded due to an incorrect definition of the ceiling for a book. This sparked a lot of activity among students who were not quite aware that they were working in a PDA environment. Book purchases due to low purchase limit threshold and these were subsequently never read. The local ISBN has also caused many problems, which is an operational matter to resolve with Coutts. The academics' habit of bookmarking titles also adds to the complexity. This resulted in a rework issue to ensure bookmarked numbers remained active at the end of the plan period. Our initial very large PDA pilot plan did not have a defined upper price limit and, in hindsight, we would not make the same decisions in the future. future. The lack of upper price limits meant that it was very easy for our users to unknowingly trigger very expensive purchases that were barely used. The biggest problem is probably identifying how funds can be made available to continue to offer PDAs as a model in a context of decreasing budgets when each resource must demonstrate its value. Evaluating the effectiveness of the PDALe average price of a purchase had to be...... middle of paper ...... the reference system lacked supervision and no one bothered to do an analysis on the number of books that did not had never been requisitioned, even once, for reading or borrowing purposes. Going over budget was never a bothersome factor because there was a concept of budgeting. Purchasing decisions were made by a general category of non-specialist managers and their decisions resulted in the accumulation of substandard publications that did not meet academic standards. for purchases.Approximate monthly spending on PDABefore installing the PDA, the spending in the first month itself was £30,000 and was reduced to £1,500. Each academic subject librarian has been provided with a spending budget ensuring value for money for each department and subject. This has greatly enriched the library..